Sum and Difference Identities
Topic Page
Sum and Difference IdentitiesQuestions
- What are some sum and difference identities examples?
- How do you use the sum and difference identities to find the exact value of #cos 15^@#?
- How do you use the sum and difference identities to find the exact value of cos 75?
- How do you use the sum and difference identities to find the exact value of tan 105 degrees?
- How do you apply the sum and difference formula to solve trigonometric equations?
- How do you evaluate #sin(45)cos(15)+cos(45)sin(15)#?
- How do you write #cos75cos35+sin75sin 35# as a single trigonometric function?
- How do you prove that #cos(x-y) = cosxcosy + sinxsiny#?
- How do you evaluate #cos((3pi)/5)cos((4pi)/15)+sin((3pi)/5)sin((4pi)/15)#?
- If sinA=4/5 and cosB= -5/13, where A belongs to QI and B belongs to QIII, then find sin(A+B). How do you write the second half of the formula where cos becomes A and sin is B and how do the quadrants affect these?
- What is #sin(x-90)#?
- What is #sin(x+pi/2)#?
- Does sin(pi-x) = sin(x)?
- How do you find cos(x+y) if sinx= 8/17 in the 1st Quadrant and cosy= 3/5 in the 4th Quadrant?
- How do you use the angle sum identity to find the exact value of cos 105?
- How do you use the angle sum identity to find the exact value of cos 165?
- How do you use the angle sum identity to find the exact value of cos 195?
- How do you use the angle sum identity to find the exact value of cos 285?
- How do you use the angle sum identity to find the exact value of sin 195?
- How do you use the angle sum identities to find the exact values of Tan(15) and Tan(45)?
- How do you use the angle sum or difference identity to find the exact value of #cos ((5pi)/ 12)#?
- How do you find the angle of the sum and difference identities to simplify sin15?
- What is the sum and difference of sin 165 degrees?
- How do you use the angle sum and difference identities to simplify sin375?
- How do you find the exact value by using sum identity #sin((11pi)/12)#?
- How do you use the sum and difference formula to simplify sec 1275?
- How do you use a sum or difference identity to find the value of cos 255?
- How do you use the sum or difference identity to find the exact value of sin 255 degrees?
- How do you use the sum and difference identities to find the exact values of the sine, cosine and tangent of the angle #(7pi)/12#?
- How do you use sum or difference identities to find the exact value of Sin 160 degrees?
- How do you find #tan (x+y)# if #cot x = 6/5# and #sec y = 3/2#?
- How do you use sum and difference identities to simplify #csc(pi/2 +x) - sec(pi - x)#?
- How do you use a sum or difference identity to determine the exact values of each trigonometric expression #cos((-5pi)/12)#?
- How do you use the sum and difference identity to find exact values of #cos(75)# and #sin (pi/12)#?
- If #Sin u= -12/37# and #cos v=-99/101#, with u being in QIII and v being in QII, how do you find the exact value of sin(u-v)?
- What is the exact value of #cos ((11 pi)/2)#?
- How do you use the Sum and Difference Identity to find the exact value of tan345°?
- How do you find the exact value #cos ((23pi)/12)#?
- How do you find the exact value tan 245?
- How do you use sum and difference identities to find the exact value of tan(-105)#?
- How do you use sum and difference identities to find the exact value of csc(-255)?
- How do you use sum and difference identities to find the exact value of csc (-15)?
- How do you verify the identity (Sum and Difference formulas) #sin(3(pi)-x)=sinx#?
- How do you use an addition or subtraction formula to find the exact value of #sin((19/12)π)#?
- How do you use an addition or subtraction formula to write the expression as a trigonometric function of one number and then find the exact value given #cos(80)cos(10)-sin(80)sin(10)#?
- How do you use an addition or subtraction formula to write the expression as a trigonometric function of one number and then find the exact value given #cos (7pi/6) cos (-pi/ 2)-sin(7pi/6)sin(-pi/2) #?
- How do you find the exact functional value sec (-pi/12) using the cosine sum or difference identity?
- How do you find the exact functional value tan 165 using the cosine sum or difference identity?
- How do you find the exact functional value tan(-5pi/12) using the cosine sum or difference identity?
- How do you find the exact functional value sin (pi/12) using the cosine sum or difference identity?
- How do you find the exact functional value cos 15 using the cosine sum or difference identity?
- How do you find the exact functional value sin(arcsin3/5 + arccos3/5) using the cosine sum or difference identity?
- How do you find the exact functional value sin(60˚+45˚) using the cosine sum or difference identity?
- How do you find the exact functional value cos(60˚+45˚) using the cosine sum or difference identity?
- How do you find the exact functional value tan(60˚+45˚) using the cosine sum or difference identity?
- How do you find the exact functional value sec 1275 using the cosine sum or difference identity?
- How do you find the exact functional value cot (113 pi/ 12) using the cosine sum or difference identity?
- How do you find the exact functional value cos 23pi/12 using the cosine sum or difference identity?
- How do you find the exact functional value sin7pi/12 using the cosine sum or difference identity?
- How do you find the exact functional value cos 7pi/12 using the cosine sum or difference identity?
- How do you find the exact functional value tan 7pi/12 using the cosine sum or difference identity?
- How do you find the exact functional value sin 75° using the cosine sum or difference identity?
- How do you find the exact functional value cos 105° using the cosine sum or difference identity?
- How do you find the exact functional value sin 11/12 pi using the cosine sum or difference identity?
- How do you find the exact functional value cos (-11/12 pi) using the cosine sum or difference identity?
- How do you find the exact functional value sin 110° cos 20° - cos 110° sin 20° using the cosine sum or difference identity?
- How do you find the exact functional value sin 110° sin 70° - cos 110° cos 70° using the cosine sum or difference identity?
- How do you find the exact functional value tan (105°) using the cosine sum or difference identity?
- How do you find the exact functional value cos25°cos15° - sin25°sin15° using the cosine sum or difference identity?
- How do you find the exact functional value tan(45°+30°) using the cosine sum or difference identity?
- How do you find the exact functional value sin 195 using the cosine sum or difference identity?
- How do you find the exact functional value tan -105 using the cosine sum or difference identity?
- How do you find the exact functional value cos 75 using the cosine sum or difference identity?
- How do you find the exact functional value sin375 using the cosine sum or difference identity?
- How do you find the exact functional value csc(-255 degrees) using the cosine sum or difference identity?
- How do you find the exact functional value csc (-15 degrees) using the cosine sum or difference identity?
- How do you find the exact functional value sin(405°+120°) using the cosine sum or difference identity?
- How do you find the exact functional value sin 405°+sin 120° using the cosine sum or difference identity?
- How do you find the exact functional value cos 165 using the cosine sum or difference identity?
- How do you find the exact functional value sin (-165) using the cosine sum or difference identity?
- How do you find the exact functional value tan 345 using the cosine sum or difference identity?
- How do you find the exact functional value Sin75° using the cosine sum or difference identity?
- How do you find the exact functional value csc 285º using the cosine sum or difference identity?
- How do you find the exact functional value Sin 165 using the cosine sum or difference identity?
- How do you find the exact functional value sec (19Pi/12) using the cosine sum or difference identity?
- How do you find the exact functional value sec (-11pi/12) using the cosine sum or difference identity?
- How do you find the exact functional value tan (13pi/12) using the cosine sum or difference identity?
- How do you find the exact functional value cos (5pi/7) using the cosine sum or difference identity?
- How do you find the exact functional value sin (-255 degrees) using the cosine sum or difference identity?
- How do you find the exact functional value cos(285 degrees) using the cosine sum or difference identity?
- Help me evaluate : cos (π/7) + cos (2π/7) + cos (3π/7) ?
- Help me evaluate : cos (π/7) - cos (2π/7) + cos (3π/7) ?
- What is the solution? If sin x=8/17, sin y= 15/17, and 0<x< π/2, 0<y<π/2; then x+y= π/2. Prove it!
- How do you simplify #cos (2π/3 - a)#?
- How do you simplify #cot (3π/2 - a)#?
- How do you simplify #sin (π/3 + a)#?
- How do you simplify #tan (5π/2 + a)#?
- How do you simplify # sin 15° cos 75° + cos 15° sin 75°#?
- How do you simplify #cos 85° cos 50° - sin 85° sin 50°#?
- How do you simplify #(tan 5π/12 + tan (π/4))/(1 - tan (5π/12) tan (π/4))#?
- How do you simplify #sin 175˚ cos 55˚ - cos 175˚ sin 55˚#?
- How do you simplify #sin70 cos40 - cos70 sin40#?
- How do you simplify #sin(x+y)-cos(x-y)# to trigonometric functions of x and y?
- How do you simplify #sin(x+y)# to trigonometric functions of x and y?
- How do you simplify #cos(x+y)# to trigonometric functions of x and y?
- How do you simplify #cos(x-y)+sin(x-y)# to trigonometric functions of x and y?
- How do you simplify #cos(x-y)/sin(x-y)# to trigonometric functions of x and y?
- How do you simplify #tan(x+y)-cos(x-y)# to trigonometric functions of x and y?
- How do you simplify #tan(x+y)-cos(x-y)# to trigonometric functions of x and y?
- How do you simplify #tan(x+y)# to trigonometric functions of x and y?
- How do you simplify #cot(x+y)# to trigonometric functions of x and y?
- How do you simplify #cot(x-2y)# to trigonometric functions of x and y?
- How do you simplify #sec(3x-y)# to trigonometric functions of x and y?
- How do you simplify #sec(x+y)-cos(x+y)# to trigonometric functions of x and y?
- How do you simplify #cos(x-y)-cos(x+y)# to trigonometric functions of x and y?
- How do you simplify #4cot(x+y)-2tan(x-y)# to trigonometric functions of x and y?
- How do you simplify #4cos(x+y)-8tan(x-y)# to trigonometric functions of x and y?
- How do you simplify #4cos(x+y)-tan(x-y)/cos(x+y)# to trigonometric functions of x and y?
- How do you simplify #sin(x+y)+tan(x-y)/cos(x+y)# to trigonometric functions of x and y?
- How do you simplify #sin(x+y)+tan(x-y)*cos(x+y)# to trigonometric functions of x and y?
- How do you simplify #tan(x+y)/sin(x-y)# to trigonometric functions of x and y?
- How do you simplify #cot(x+y)+cos(4x-y)# to trigonometric functions of x and y?
- How do you simplify #cot(x+y)+sin(4x+2y)# to trigonometric functions of x and y?
- How do you simplify #cot(x+y)-sin(x+2y)# to trigonometric functions of x and y?
- How do you simplify #sin(x-y)/cos(x+y)+tan(x-y)# to trigonometric functions of x and y?
- How do you simplify #sin(x-y)/cos(x+y)-tan(x+y)# to trigonometric functions of x and y?
- How do you simplify #sin(x+y)/cos(x-y)-2tan(x+y)# to trigonometric functions of x and y?
- How do you simplify #sin(x+y)/cos(x-y)-2tan(x-y)# to trigonometric functions of x and y?
- How do you simplify #cos(x-y)/sin(x+y)-cot(x-y)# to trigonometric functions of x and y?
- How do you simplify #cos(x-y)/sin(x+y)-4cot(x+y)# to trigonometric functions of x and y?
- How do you simplify #cos(x+y)/sin(x-y)-2cot(x+y)# to trigonometric functions of x and y?
- How do you simplify #cos(x+y)/sin(x-y)-cot(x-y)# to trigonometric functions of x and y?
- How do you prove #sin 5pi/12 = sin pi/6 cos pi/4 + cos pi/6 sin pi/4#?
- How do you find the exact value using the sum or difference identities of secant 105 degrees?
- How do you find the exact value using the sum or difference identities of cos pi/12?
- How do you prove #sin (x+y)sin(x-y) = cos^2y-cos^2x#?
- How do you prove #cos (-x)+cos (pi-x) = cos (pi+x) + cosx#?
- How do you evaluate Cos ( ( 2pi/3)-(pi/6) )?
- How do you express cos(pi+x) and sin(2pi-x) in terms of sin x and cos x?
- How do you simplify #cos(2pi/3)cos(pi/6)+sin(2pi/3)cos(pi/6)#?
- How do you simplify cos (5pi/12)+cos(2pi/3-pi/4)?
- How do you simplify cos(x - pi/2)?
- How do you simplify #cos (theta – 2pi)#?
- How do you prove #cos (pi-x) =- cosx#?
- If sin(t)=0.8 and cos(t)=0.6, what is #sin(t)+cos(-t)+sin(-t+2pi)#?
- How do you simplify #cos (pi/3 + x) - cos (pi/3 - x)#?
- How do you simplify #cos( pi + x) + cos (pi - x)#?
- How do you find the value of #sin (pi/3-pi/4)#?
- How do you simplify #Sin(x+pi/4)#?
- How do you simplify #Sin (x+(pi/6)) - sin (x-(pi/6)) #?
- How do you simplify #cos (x+pi/6)+sin(x-pi/3)#?
- How do you simplify #Sin (pi/3 - x)-cos(pi/6 + x)#?
- How do you simplify #cos(x - pi/2)#?
- How do you simplify #Sin (pi/6 + x)#?
- How do you simplify #cos(pi/2-theta)#?
- How do you find the value of #cos(pi/3 - pi/6)#?
- How do you find the exact value of #cos ( (2pi/3)-(pi/6))#?
- Write the following as product of trigonometric ratios?
- How do you simplify #cos(x - pi/2)#?
- How do you prove #cos(x-(pi/2))=sin x#?
- How do you prove #cos (theta + 2pi) = cos theta #?
- How do you simplify #cos ( pi - a ) + sin ( (pi/2) + a)#?
- How do you simplify #sin(t+pi/2)#?
- How do you simplify #cos(t-pi/2)#?
- Question #75401
- How do you verify #2cos(a+b)sin(a-b) = sin(2a) - sin(2b)#?
- How do you show #arctan (x) ± arctan (y) = arctan [(x ± y) / (1 ± xy)] #?
- What is the value of #cos(pi/7) cos(pi/5)-sin(pi/7) sin(pi/5)#?
- How do you use the sum-to-product formulas to write the given expression as a product sin7θ-sin5θ?
- How do you simplify #sin(x + (3π)/2) cos x#?
- Question #2cb46
- Question #fa554
- How do you find the exact value of #sin 84# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos 36^@# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos45sin65-cos65sin45# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin24# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin30cos55-cos30sin55# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos48# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin50cos25-cos50sin25# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos70sin48-cos48sin70# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin70cos55-cos70sin55# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin35cos60-cos35sin60# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin60cos20-cos60sin20# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos58# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin85# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin45cos30-cos45sin30# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #sin60cos46-cos69sin46# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos40sin55-cos55sin40# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos45# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos62# using the sum and difference, double angle or half angle formulas?
- How do you find the exact value of #cos68# using the sum and difference, double angle or half angle formulas?
- Question #cb7c5
- How do you use the angle sum identity to find the exact value of #cos255#?
- How do you use the angle sum identity to find the exact value of #sin105#?
- How do you use the angle sum identity to find the exact value of #sin285#?
- How do you use the angle sum identity to find the exact value of #sin255#?
- How do you use the angle difference identity to find the exact value of #cos75#?
- How do you use the angle difference identity to find the exact value of #cos-15#?
- How do you use the angle difference identity to find the exact value of #tan75#?
- How do you use the angle difference identity to find the exact value of #cos15#?
- How do you use the angle sum or difference identity to find the exact value of #sin(pi/3+pi/4)#?
- How do you use the angle sum or difference identity to find the exact value of #sin(pi/2-pi/6)#?
- How do you use the angle sum or difference identity to find the exact value of #cos(45-60)#?
- How do you use the angle sum or difference identity to find the exact value of #cos(pi/3+pi/6)#?
- How do you use the angle sum or difference identity to find the exact value of #tan(pi/4+pi/3)#?
- How do you use the angle sum or difference identity to find the exact value of #tan(pi/6-pi/3)#?
- How do you use the angle sum or difference identity to find the exact value of #sin(pi/6)cos(pi/2)+cos(pi/6)sin(pi/2)#?
- How do you use the angle sum or difference identity to find the exact value of #(tan(pi/4)-tan(pi/6))/(1+tan(pi/4)tan(pi/6))#?
- How do you use the angle sum or difference identity to find the exact value of #cos(pi/3)cos(pi/6)+sin(pi/3)sin(pi/6)#?
- How do you use the angle sum or difference identity to find the exact value of #sin((5pi)/12)#?
- How do you use the angle sum or difference identity to find the exact value of #tan195#?
- How do you use the angle sum or difference identity to find the exact value of #csc(pi/3+pi/4)#?
- How do you use the angle sum or difference identity to find the exact value of #sec(pi/12)#?
- How do you use the angle sum or difference identity to find the exact value of #cot(pi/2-pi/4)#?
- How do you use the angle sum or difference identity to find the exact value of #cos((7pi)/12)#?
- How do you use the angle sum or difference identity to find the exact value of #cos((-11pi)/12)#?
- How do you use the angle sum or difference identity to find the exact value of sin15#?
- How do you use the angle sum or difference identity to find the exact value of cos((11pi)/12)#?
- How do you use the angle sum or difference identity to find the exact value of #sin((23pi)/12)#?
- How do you use the angle sum or difference identity to find the exact value of #tan((7pi)/12)#?
- How do you find the value of #cos210#?
- How do you find the value of #tan225#?
- How do you find the value of #tan((11pi)/12)#?
- How do you find the value of #cos((17pi)/12)#?
- How do you find the value of #sin(-(11pi)/12)#?
- How do you find the value of #tan(-(5pi)/12)#?
- How do you find the value of #sin((5pi)/12)#?
- How do you evaluate the expression #sin(u+v)# given #cosu=4/7# with #0<u<pi/2# and #sinv=-9/10# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #cos(u+v)# given #cosu=4/7# with #0<u<pi/2# and #sinv=-9/10# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #tan(u+v)# given #cosu=4/7# with #0<u<pi/2# and #sinv=-9/10# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #sin(u-v)# given #cosu=4/7# with #0<u<pi/2# and #sinv=-9/10# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #cos(u-v)# given #cosu=4/7# with #0<u<pi/2# and #sinv=-9/10# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #tan(u-v)# given #cosu=4/7# with #0<u<pi/2# and #sinv=-9/10# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #sin(u+v)# given #sinu=3/5# with #pi/2<u<p# and #cosv=-5/6# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #cos(u+v)# given #sinu=3/5# with #pi/2<u<p# and #cosv=-5/6# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #tan(u+v)# given #sinu=3/5# with #pi/2<u<p# and #cosv=-5/6# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #sin(u-v)# given #sinu=3/5# with #pi/2<u<p# and #cosv=-5/6# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #cos(u-v)# given #sinu=3/5# with #pi/2<u<p# and #cosv=-5/6# with #pi<v<(3pi)/2#?
- How do you evaluate the expression #tan(u-v)# given #sinu=3/5# with #pi/2<u<p# and #cosv=-5/6# with #pi<v<(3pi)/2#?
- How do you simplify #tan(x-2pi)#?
- How do you simplify #sin(x+pi)#?
- How do you simplify #cos(x+pi)#?
- How do you simplify #sin(x-pi/2)#?
- How do you simplify #cos(x+(3pi)/2)#?
- How do you simplify #cos(x+pi/2)#?
- How do you solve #cos(x+pi/6)-1=cos(x-pi/6)#?
- How do you solve #sin(x+(3pi)/4)+sin(x-(3pi)/4)=1#?
- How do you solve #sin(x+pi/6)+sin(x-pi/6)=0#?
- How do you solve #cos(x+pi/3)+cos(x-pi/3)=1#?
- How do you solve #tan(x+pi)+2sin(x+pi)=0#?
- How do you solve #tan(x+pi)+cos(x+pi/2)=0#?
- How would you use the sum and difference identities to prove: 2sin(a+b)sin(a-b) = cos(2b) - cos(2a) ?
- How do you use the sum and difference formula to simplify #sin165#?
- How do you use the sum and difference formula to simplify #cos15#?
- How do you use the sum and difference formula to simplify #cot(-(5pi)/12)#?
- How do you use the sum and difference formula to simplify #cos((17pi)/12)#?
- How do you use the sum and difference formula to simplify #sec((17pi)/12)#?
- How do you use the sum and difference formula to simplify #sin20cos80-cos20sin80#?
- How do you use the sum and difference formula to simplify #sin40cos10+sin40sin10#?
- How do you use the sum and difference formula to simplify #cos(pi/12)cos((5pi)/12)+cos(pi/12)sin((5pi)/12)#?
- How do you use the sum and difference formula to simplify #(1-tan40tan20)/(tan40+tan20)#?
- How do you simplify using the sum and difference formula #cos((5pi)/12)#?
- How do you simplify using the sum and difference formula #sin((11pi)/12)#?
- How do you simplify using the sum and difference formula #tan(285)#?
- How do you simplify using the sum and difference formula #cos75#?
- How do you use the sum and difference identity to evaluate #sin(pi/12)#?
- How do you use the sum and difference identity to evaluate #tan105#?
- How do you use the sum and difference identity to evaluate #sin((7pi)/12)#?
- How do you rewrite #sin37cos22+cos37sin22# as a function of a single angle and then evaluate?
- How do you rewrite #cos83cos53+sin83sin53# as a function of a single angle and then evaluate?
- How do you rewrite #cos19cos5-sin19sin5# as a function of a single angle and then evaluate?
- How do you rewrite #sin40cos15-cos40sin15# as a function of a single angle and then evaluate?
- How do you rewrite #(tan20+tan32)/(1-tan20tan32)# as a function of a single angle and then evaluate?
- How do you rewrite #(tan35-tan12)/(1+tan35tan12)# as a function of a single angle and then evaluate?
- How do you simplify #sin(alpha+beta)+sin(alpha-beta)#?
- How do you simplify #cos(alpha+beta)-cos(alpha-beta)#?
- How do you simplify #cos(u+v)cosv+sin(u+v)sinv#?
- How do you simplify #sin(u-v)cosv+cos(u-v)sinv#?
- How do you simplify #sec(x+pi/2)#?
- How do you find the equivalent expression for #cot(x-pi/2)#?
- How do you find the equivalent expression for #tan(x-pi/2)#?
- How do you find the equivalent expression for #csc(x+pi/2)#?
- How do you simplify #sin(pi/2-x)(secx-cosx)#?
- How do you simplify #cos(pi-x)+cotxsin(x-pi/2)#?
- How do you simplify #(cosx-sin(pi/2-x)sinx)/(cosx-cos(pi-x)tanx)#?
- How do you simplify #(cos^2ysin(y+pi/2))/(sin^2ysin(pi/2-y)#?
- Question #16097
- Question #97001
- Question #001f0
- Question #79582
- Question #40e1d
- How do you use the sum or difference identities to find the exact value of #cos165^circ#?
- How do you use the sum or difference identities to find the exact value of #tan(pi/12)#?
- How do you use the sum or difference identities to find the exact value of #sec795^circ#?
- How do you use the sum or difference identities to find the exact value of #cos105^circ#?
- How do you use the sum or difference identities to find the exact value of #sin165^circ#?
- How do you use the sum or difference identities to find the exact value of #sin(pi/12)#?
- How do you use the sum or difference identities to find the exact value of #tan195^circ#?
- How do you use the sum or difference identities to find the exact value of #cos(-pi/12)#?
- How do you use the sum or difference identities to find the exact value of #tan165^circ#?
- How do you use the sum or difference identities to find the exact value of #tan((23pi)/12)#?
- How do you use the sum or difference identities to find the exact value of #sin735^circ#?
- How do you use the sum or difference identities to find the exact value of #sec1275^circ#?
- How do you use the sum or difference identities to find the exact value of #csc((5pi)/12)#?
- How do you use the sum or difference identities to find the exact value of #cot((113pi)/12)#?
- How do you find the exact value sin(x-y) if #sinx=4/9, siny=1/4#?
- How do you find the exact value #tan(x+y)# if #cscx=5/3, cosy=5/13#?
- How do you find the exact value #sin(x+y)# if #cosx=8/17, siny=12/37#?
- How do you find the exact value #cos(x-y)# if #cosx=3/5,cosy=4/5#?
- How do you find the exact value #tan(x-y)# if #sinx=8/17,cosy=3/5#?
- How do you find the exact value #cos(x+y)# if #tanx=5/3,siny=1/3#?
- How do you find the exact value #tan(x+y)# if #cotx=6/5,secy=3/2#?
- How do you find the exact value #sec(x-y)# if #cscx=5/3,tany=12/5#?
- How do you verify the identity #sin(90+A)=cosA#?
- How do you verify the identity #tan(theta+pi/2)=-cottheta#?
- How do you verify the identity #sin(x-y)=(1-cotxtany)/(cscxsecy)#?
- How do you verify the identity #cos(pi/2+x)=-sinx#?
- How do you verify the identity #cos(60+A)=sin(30-A)#?
- How do you verify the identity #sin(A+pi)=-sinA#?
- How do you verify the identity #cos(180+x)=-cosx#?
- How do you verify the identity #tan(x+45)=(1+tanx)/(1-tanx)#?
- How do you verify the identity #sin(A+B)=(tanA+tanB)/(secAsecB)#?
- How do you verify the identity #cos(A+B)=(1-tanAtanB)/(secAsecB)#?
- How do you verify the identity #sec(A-B)=(secAsecB)/(1+tanAtanB)#?
- How do you verify the identity #sin(x+y)sin(x-y)=sin^2x-sin^2y#?
- How you find #sin2a# using sum identity?
- Question #b3c4b
- Question #f4579
- Question #6115f
- Question #b2380
- Question #0f589
- Question #9b890
- Question #a9666
- Question #f5163
- How do you find the exact value of #cos(pi/4+pi/3)#?
- How do you find the exact value of #cos(pi/4)+cos(pi/3)#?
- How do you find the exact value of #sin((3pi)/4+(5pi)/6)#?
- How do you find the exact value of #sin((3pi)/4)+sin((5pi)/6) #?
- How do you find the exact value of #sin((7pi)/6)-sin(pi/3) #?
- How do you find the exact value of #cos((2pi)/3-pi/6)#?
- How do you find the exact value of #cos((2pi)/3)+cos(pi/6)#?
- How do you find the exact value of #cos(120^circ+45^circ)#?
- How do you find the exact value of #cos(120^circ)+cos(45^circ)#?
- How do you find the exact value of #sin(135^circ-30^circ)#?
- How do you find the exact value of #sin(135^circ)-cos(30^circ)#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #285^circ#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #-105^circ#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #-165^circ#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #15^circ#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #(13pi)/12#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #(-7pi)/12#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #(-13pi)/12#?
- How do you find the exact values of the sine, cosine, and tangent of the angle #(5pi)/12#?
- How do you write the expression #cos25^circcos15^circ-sin25^circsin15^circ# as a sine, cosine or tangent of an angle?
- How do you write the expression #sin140^circcos50^circ+cos140^circsin50^circ# as the sine, cosine, or tangent of an angle?
- How do you write the expression #(tan325^circ-tan86^circ)/(1+tan325^circtan86^circ)# as the sine, cosine, or tangent of an angle?
- How do you write the expression #(tan140^circ-tan60^circ)/(1+tan140^circtan60^circ)# as the sine, cosine, or tangent of an angle?
- How do you write the expression #sin3cos1.2-cos3sin1.2# as the sine, cosine, or tangent of an angle?
- How do you write the expression #cos(pi/7)cos(pi/5)-sin(pi/7)sin(pi/5)# as the sine, cosine, or tangent of an angle?
- How do you write the expression #(tan2x+tanx)/(1-tan2xtanx)# as the sine, cosine, or tangent of an angle?
- How do you write the expression #cos3xcos2y+sin3xsin2y# as the sine, cosine, or tangent of an angle?
- How do you find the exact value of the expression #sin330^circcos30^circ-cos330^circsin30^circ#?
- How do you find the exact value of the expression #cos15^circcos60^circ+sin15^circsin60^circ#?
- How do you find the exact value of the expression #sin(pi/12)cos(pi/4)+cos(pi/12)sin(pi/4)#?
- How do you find the exact value of the expression #(tan25^circ+tan110^circ)/(1-tan25^circtan110^circ)#?
- How do you find the exact value of the expression #(tan((5pi)/4)-tan(pi/12))/(1+tan((5pi)/4)tan(pi/12))#?
- How do you find the exact value of #sin(u+v)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #cos(u-v)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #cos(u+v)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #sin(v-u)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #tan(u+v)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #csc(u-v)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #sec(v-u)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #cot(u+v)# given that #sinu=5/13# and #cosv=-3/5#?
- How do you find the exact value of #sin(u+v)# given that #sinu=-7/25# and #cosv=-4/5#?
- How do you find the exact value of #tan(u-v)# given that #sinu=-7/25# and #cosv=-4/5#?
- How do you find the exact value of #cot(v-u)# given that #sinu=-7/25# and #cosv=-4/5#?
- How do you find the exact value of #sec(u+v)# given that #sinu=-7/25# and #cosv=-4/5#?
- How do you find the exact value of #cos(u-v)# given that #sinu=-7/25# and #cosv=-4/5#?
- How do you verify the identity #sin(3pi-x)=sinx#?
- How do you verify the identity #sin(pi/6+x)=1/2(cosx+sqrt3sinx)#?
- How do you verify the identity #cos((5pi)/4-x)=-sqrt2/2(cosx+sinx)#?
- How do you verify the identity #cos(pi-theta)+sin(pi/2+theta)=0#?
- How do you verify the identity #tan(pi/4-theta)=(1-tantheta)/(1+tantheta)#?
- How do you verify the identity #sin(x+y)+sin(x-y)=2sinxcosy#?
- How do you verify the identity #cos(x+y)+cos(x-y)=2cosxcosy#?
- How do you simplify #cos((3pi)/2-x)#?
- How do you simplify #tan(pi+theta)#?
- How do you find all solutions of the equation #sin(x+pi/3)+sin(x-pi/3)=1# in the interval #[0,2pi)#?
- How do you find all solutions of the equation #sin(x+pi/6)-sin(x-pi/6)=1/2# in the interval #[0,2pi)#?
- How do you find all solutions of the equation #cos(x+pi/4)-cos(x-pi/4)=1# in the interval #[0,2pi)#?
- How do you find all solutions of the equation #tan(x+pi)+2sin(x+pi)=0# in the interval #[0,2pi)#?
- How do you use the graphing utility to approximate the solution #tan(x+pi)-cos(x+pi/2)=0# in the interval #[0,2pi)#?
- How do you write the expression as the sine, cosine, or tangent of the angle given #sin60^circcos45^circ-cos60^circsin45^circ#?
- How do you write the expression as the sine, cosine, or tangent of the angle given #cos45^circcos120^circ-sin45^circsin120^circ#?
- How do you write the expression as the sine, cosine, or tangent of the angle given #(tan25^circ+tan10^circ)/(1-tan25^circtan10^circ)#?
- How do you write the expression as the sine, cosine, or tangent of the angle given #(tan68^circ-tan115^circ)/(1+tan68^circtan115^circ)#?
- How do you use product to sum formulas to write the product #cos(pi/6)sin(pi/6)# as a sum or difference?
- How do you use product to sum formulas to write the product #6sin15^circsin45^circ# as a sum or difference?
- How do you use product to sum formulas to write the product #cos5thetacos3theta# as a sum or difference?
- How do you use product to sum formulas to write the product #4sin3alphacos2alpha# as a sum or difference?
- How do you use sum to product formulas to write the sum or difference #sin60^circ+sin90^circ# as a product?
- How do you use sum to product formulas to write the sum or difference #cos3theta+cos2theta# as a product?
- How do you use sum to product formulas to write the sum or difference #cos(x+pi/6)-cos(x-pi/6)# as a product?
- How do you use sum to product formulas to write the sum or difference #sin(x+pi/4)-sin(x-pi/4)# as a product?
- How do you write the product #6sin8thetacos3theta# as a sum or difference?
- How do you write the product #2cos5thetasin2theta# as a sum or difference?
- Question #c0f6a
- Question #a29a7
- Find the value of #sin30^@+cos30^@+tan30^@+cot30^@+sec30^@+csc30^@#?
- Question #aee9f
- Question #31450
- Question #683a7
- Question #79586
- Tan35°+tan10°tan35°+tan10°=?
- Simplify #(tan((5pi)/14)+tan(pi/14))/(1-tan((5pi)/14)tan(pi/14))#?
- Question #b954a
- Find the value of #sin(120^@-45^@)#?
- Question #376ff
- Simplify the expression? #cos(270+2alpha)+sin(450+2alpha)#
- The angle #x - 20˚# is subtracted from #70˚ + x#, and the sine of the result is taken. What is the final answer obtained?
- Question #73c4a
- Question #c8ed2
- Question #7a284
- Question #a7db9
- How do you simplify #sin((2pi)/7)+sin((4pi)/7)+sin((8pi)/7)# ?
- How do i prove cos(2π-θ)= cosθ?
- Sine (45 + x )?