Half-Angle Identities
Topic Page
Half-Angle IdentitiesQuestions
- What is the Half-Angle Identities?
- How do you use the half angle identity to find cos 105?
- How do you use the half angle identity to find cos 15?
- How do you use the half angle identity to find sin 105?
- How do you use the half angle identity to find #tan (pi/8)#?
- How do you use half angle identities to solve equations?
- How do you solve #\sin^2 \theta = 2 \sin^2 \frac{\theta}{2} # over the interval #[0,2pi]#?
- How do you find the exact value for #sin105# using the half‐angle identity?
- How do you find the exact value for #cos165# using the half‐angle identity?
- How do you find the exact value of #cos15#using the half-angle identity?
- How do you use a half-angle formula to find #cos (pi/8)#?
- How do you use half angle formulas to find the exact value for cos 15 without using a calculator?
- How do you use half angle formula to find cos 22.5?
- How do you use half angle formula to find sin 15?
- How do you use half angle formula to find sin 75?
- How do you use half angle formula to find tan 15?
- How do you use half angle formula to find #tan (5pi)/12#?
- How do you find sin (x/2), given #cos x = -5/8#, with #pi/2 < x <pi#?
- What is the proof of the half-angle formula?
- If #cscx=2#, 90°<x<180° how do you find sin(x/2), cos(x/2), tan(x/2)?
- How do you use a half-angle identity to find cos x, for #x= ((5pi)/12)#?
- How do you find the exact value of sin67.5 degrees?
- How do you find the exact value of sinx/2, cosx/2, & tanx/2 given that #sinx= 5/13# is in Quadrant 2?
- How do you use a half angle formula to find the exact value of sin22.5 degrees?
- How do you find the exact value of the half angle of #tan 157.5#?
- How do you find the exact values of sin(u/2), cos (u/2), tan (u/2) using the half angle formulas given #cos u= 3/5#, #0<u<pi/2#?
- How do you use half angle formula to simplify #sin (3pi)/8#?
- How do you use the half angle formula for #sin ((5pi)/12)#?
- How do you use the half angle formula to find #sin ((9pi)/ 8)#?
- How do you use half angle formula to find #sin 112.5#?
- How do you use half angle formula to find #sin ((11pi)/12)#?
- How do you use half angle formula to find #sin 165#?
- How do you use half angle formula to find #sin 22.5#?
- How do you use half angle formula to find #sin 67.5#?
- How do you use the half angle formula to find #sin (pi/12)#?
- How do you use the half angle formula to simplify #cos^2(pi/3)#?
- How do you use the half angle formula to simplify #sin^2(pi/6)#?
- How do you use the half angle formula to simplify #sin^3(pi/6)#?
- How do you use the half angle formula to simplify #cos^2(pi/12)#?
- How do you use a half-angle formula to simplify the following expression #(sin(4x))/(1+cos(4x))#?
- How would you use the half-angle formula to find the exact values of #tan 195#degrees?
- How do you use the half angle formula to simplify #sin^2(pi/8)#?
- How do you use the half angle identity to solve sin 165°, cos 165° and tan 165° ?
- How do you use the half angle formula to find the value of #sin^2(112.5)#?
- Using the double angle of half angle formula, how do you simplify #cos^2 34- sin^2 34#?
- Using the double angle of half angle formula, how do you simplify #cos^2 5theta- sin^2 5theta#?
- Using the double angle of half angle formula, how do you simplify #sin8 /(1+cos 8)#?
- Using the double angle of half angle formula, how do you simplify #(1-cos 4 theta)/(sin4theta)#?
- How do you use half angle formula evaluate #sin(-67.5)# and #cos (pi/2)#?
- How do you derive the half angle formula for sin,cos and tan?
- How do you find the exact value of sin7.5?
- How do you use the half-angle formulas to find the exact value of #tan((3pi)/8)#?
- How do you find #sin(x/2)# if #cscx=3#?
- How do you use half-angle formulas to find exact values of #sin((-17pi)/12)# and #cos((-17pi)/12)#?
- How do you use an appropriate Half-Angle Formula to find the exact value of the expression #sin ((13pi)/12)#?
- How do you use a half-angle formula to find the exact value of #cos((3pi)/8)#?
- How do you use a half-angle formula to find the exact value of #cos22.5#?
- How do you use a half-angle formula to find the exact value of #tan((9pi)/8)#?
- How do you use a half-angle formula to simplify #tan(292.5)#?
- How do you use a half-angle formula to simplify #cos(-337.5)#?
- How do you use a half-angle formula to simplify #cos 195#?
- How do you use a half-angle formula to simplify #tan 195#?
- How do you use a half-angle formula to simplify #tan 67.5#?
- How do you use a half-angle formula to simplify #sin -105#?
- How do you use a half-angle formula to simplify #csc [ (7pi) / 8 ]#?
- How do you use a half-angle formula to simplify #cos [ - (3pi) / 8]#?
- How do you use a half-angle formula to simplify #tan[ (9pi) / 8 ]#?
- How do you use a half-angle formula to simplify #tan[ (7pi) / 8 ]#?
- How do you use a half-angle formula to simplify #tan 105#?
- How do you use a half-angle formula to simplify #tan 75#?
- How do you use a half-angle formula to simplify #tan ((7pi)/8)#?
- How do you simplify #Tan (-195)#?
- How do you find Tan 22.5 using the half angle formula?
- How do you find sin(-105degrees) using the half angle formula?
- How do you find the exact value of #cos(-(5pi)/12)# using the half angle formula?
- How do you find the exact values of cos(11pi/12) using the half angle formula?
- How do you find the exact values of cos(2pi/5)cos(3pi/5)-sin(2pi/5)sin(3pi/5) using the half angle formula?
- How do you find the exact values of sin (-17pi/12)+sin(pi/12) using the half angle formula?
- How do you find the exact values of cos(13pi/24)sin(31pi/24) using the half angle formula?
- How do you find the exact values of sin 15 degrees using the half angle formula?
- How do you find the exact values of cos 75 degrees using the half angle formula?
- How do you find the exact values of tan 112.5 degrees using the half angle formula?
- How do you find the exact values of sin 75 degrees using the half angle formula?
- How do you find the exact values of tan3pi/8 using the half angle formula?
- How do you find the exact values of cos(3pi/8) using the half angle formula?
- How do you find the exact values of sin 165° using the half angle formula?
- How do you find the exact values of cos 165° using the half angle formula?
- How do you find the exact values of tan 165° using the half angle formula?
- How do you find the exact values of cos 195° using the half angle formula?
- How do you find the exact values of sin 195° using the half angle formula?
- How do you find the exact values of cos 22.5 degrees using the half angle formula?
- How do you find the exact values of cos 105 using the half angle formula?
- How do you find the exact values of sin 105 using the half angle formula?
- How do you find the exact values of tan(5pi/12) & sin(5pi/12) using the half angle formula?
- How do you find the exact values of cos^2(pi/3) using the half angle formula?
- How do you find the exact values of sin^2(pi/6) using the half angle formula?
- How do you find the exact values of sin^3(pi/6) using the half angle formula?
- How do you find the exact values of cos^2(pi/12) using the half angle formula?
- How do you find the exact values of sin^2(pi/8) using the half angle formula?
- How do you find the exact values of cos 15 using the half angle formula?
- How do you find the exact values of Tan (-195) using the half angle formula?
- How do you find the exact values of COS(-337.5) using the half angle formula?
- How do you find the exact values of sin 22.5 ° using the half angle formula?
- How do you find the exact values of tan 67.5 degrees using the half angle formula?
- How do you find the exact values of tan pi/ 8 using the half angle formula?
- How do you find the exact values of cos(67.5) using the half angle formula?
- How do you find the exact values of cos15 (degrees) using the half angle formula?
- How do you find the exact values of cos pi/8 using the half angle formula?
- How do you find the exact values of tan 15° using the half angle formula?
- How do you find the exact values of cos(5pi/12) using the half angle formula?
- How do you find the exact values of tan 7pi/8 using the half angle formula?
- How do you use the half-angle identity to find the exact value of cos (11pi/8)?
- How do you use the half-angle identity to find the exact value of csc 112.5?
- How do you use the half-angle identity to find the exact value of cos(67.5 degrees)?
- How do you use the half-angle identity to find the exact value of cot (11pi/12)?
- How do you use the half-angle identity to find the exact value of sin(pi/6)?
- How do you use the half-angle identity to find the exact value of cos(-pi/12)?
- How do you use the half-angle identity to find the exact value of sin (-pi/12)?
- How do you use the half-angle identity to find the exact value of Cos(-22.5)?
- How do you use the half-angle identity to find the exact value of tan(7pi/8)?
- How do you use the half-angle identity to find the exact value of sin67.5°?
- How do you use the half-angle identity to find the exact value of sin(-105degrees) ?
- How do you use the half-angle identity to find the exact value of cos [ - (3pi) / 8]?
- How do you use the half-angle identity to find the exact value of csc [ (7pi) / 8 ]?
- How do you use the half angle identity to find exact value of sin 75 degrees?
- How do you use the half angle identity to find exact value of sin 15 degrees?
- How do you use the half angle identity to find exact value of cos 75 degrees?
- How do you use the half angle identity to find exact value of cos pi/8 degrees?
- How do you use the half angle identity to find exact value of cos 15 degrees?
- How do you use the half angle identity to find exact value of tan(75) degrees?
- How do you use the half angle identity to find exact value of cos22.5 degrees?
- How do you use the half angle identity to find exact value of sin195?
- How do you use the half angle identity to find exact value of tan 15°?
- How do you use the half angle identity to find exact value of tan3pi/8?
- How do you use the half angle identity to find exact value of sin(-15)?
- How do you use the half angle identity to find exact value of cos^2(pi/3)?
- How do you use the half angle identity to find exact value of sin^2(pi/6)?
- How do you use the half angle identity to find exact value of sin^3(pi/6)?
- How do you use the half angle identity to find exact value of cos^2(pi/12)?
- How do you use the half angle identity to find exact value of sin^2(pi/8)?
- How do you use the half angle identity to find exact value of tan(pi/12)?
- How do you use the half angle identity to find exact value of tan 112.5?
- How do you use the half angle identity to find exact value of cos75?
- How do you use the half angle identity to find exact value of Cos(-5pi/12)?
- How do you use the half angle identity to find exact value of cos(2pi/5)?
- How do you use the half angle identity to find exact value of sin (-17pi/12)+sin(pi/12)?
- How do you use the half angle identity to find exact value of tan 67.5?
- How do you use the half angle identity to find exact value of Sin (3pi/8)?
- How do you use the half angle identity to find exact value of cos 22.5?
- How do you simplify #sin(theta/2)# using the double angle identities?
- How do you simplify #cos(theta/2)# using the double angle identities?
- How do you simplify #tan(theta/2)# using the double angle identities?
- How do you simplify #sec(theta/2)-tan(theta/2)# using the double angle identities?
- How do you simplify #cos(theta/2)-2tan(theta/2)# using the double angle identities?
- What is #sin(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #cos(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #tan(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #cot(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #csc(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #sec(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #2sin(theta/4)-cos(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #2sin(theta/2-pi/4)-cos(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #3sin(theta/2)+cot(theta/2)# in terms of trigonometric functions of a unit #theta#?
- What is #cos(theta/2)-2cot(theta/2)# in terms of trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=2tan(theta/2)-sin(theta/4)-sec(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=tan(theta/2)+3cos(theta/4)-cos(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=-cot(theta/2)+3csc(theta/4)-cos(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=2cot(theta/2)-csc(theta/4)-cos(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=tan(theta/2)-4sec(theta/4)+sin(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=tan(theta/2)+sec(theta/4)-sin(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=3cot(theta/2)+tan(theta/2)-3cos(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=-2csc(theta/4)+tan(theta/2)-3cos(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=-2csc(theta/4)-cot(theta/2)-3cos(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=-2csc(theta/4)-cot(theta/2)+2sin(theta/4)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=sec(theta/4)+2cos(theta/4-pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=sec(theta/4)-sin(theta/4-pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=sec(theta/4)-cos(theta/4-pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=sec(theta/4)-tan(theta/2+pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=cot(theta/4)-tan(theta/2+pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=2cot(theta/2)-3sin(theta/4+pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=-cot(theta/2)+2sec(theta/4+pi/2)# to trigonometric functions of a unit #theta#?
- How do you simplify #f(theta)=cot(theta/2)+3sin(theta/4+pi/2)# to trigonometric functions of a unit #theta#?
- How do you express #f(theta)=sin(theta/2)+cos^2(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=sin(theta/2)+cos(-theta/2-pi)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=2sin(theta/2)-5cos(-theta/2-pi)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=-5cos(theta/8)-sin(-theta/4+pi/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=-sin(theta/4)-cos(theta/4)+6sin(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=-sin(theta/4)-cos(theta/2)+6sin(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=-sin(theta/4)-cos(theta/2)+6cos(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=sin(theta/4)+tan(theta/2)+cot(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=sin(theta/4)+tan(theta/2)+cot(theta/4)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=cos(theta/2)-tan(theta/4)+sec(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=cos(theta/2)-tan(theta/2)+sin(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=cos^2(theta/4)+cot(theta/2)+sin^2(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=cos(theta/4)+csc(theta/2)+sin^2(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=cos(theta/4)+csc(theta/2)+sin(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you express #f(theta)=cos(theta/4)+sec^2(theta/2)+cot(theta/2)# in terms of trigonometric functions of a whole theta?
- How do you use the half angle formula to evaluate #Tan (-195) #?
- How do you use the half angle formula to solve #Tan( θ/2) = Sin θ#?
- How do you use the half angle formula to prove # (Cos (θ/2) - Sin( θ/2))^2#?
- How do you use # sin(pi/6)=1/2# to find cos(-pi/12)?
- Question #14149
- If #tantheta>0# and #csctheta=2#, find all the trigonometrical ratios of #theta#?
- Question #7318f
- Question #dcf23
- Question #e1771
- How do you find #cos67.5# using the half-angle identity?
- How do you find Sin x/2 if cos x=7/9 using the half-angle identity?
- How do you find cos x/2 if cos x= -31/49 using the half-angle identity?
- How do you evaluate #tan (pi/12)# using the half angle formula?
- How do you evaluate #cos ((11pi)/8)# using the half angle formula?
- How do you use half angle identities and the fact that sin(pi/6)=1/2 to find cos(-pi/12) and sin (-pi/12)?
- How do you find sin (x/2), given cos x = -5/8, with π/2 < x < π?
- How do you find the value of the sin of θ/2 given that cos a = 5/13 and a is in Quadrant IV?
- How do you find the value of tan of θ/2 given that cos a = -4/5 and a is in Quadrant II?
- How do you solve #cos(t)=-7/9# with #pi<t<3pi/2#?
- How do you evaluate #cos(pi/12)# using the half angle formula?
- How do you evaluate #sin ((7pi)/8)# using the half angle formula?
- Question #3074b
- How do you use the half-angle identities to find all solutions on the interval [0,2pi) for the equation #sin^2x = cos^2 (x/2)#?
- Given cos(t)=-7/9 and sin(t)= -sqrt32/9, both in the 3rd Quadrant how do you find cos(t/2) and sin(t/2)?
- How do you find the value of #tan45# using the half angle identity?
- How do you find the value of #sin165# using the half angle identity?
- How do you find the value of #cos30# using the half angle identity?
- How do you find the value of #sec((5pi)/12)# using the double angle or half angle identity?
- How do you find the value of #cot 240# using the double angle or half angle identity?
- How do you find the value of #cot ((2pi)/3)# using the double angle or half angle identity?
- How do you find the value of #cot 60# using the double angle or half angle identity?
- How do you find the value of #cot ((5pi/3)# using the double angle or half angle identity?
- How do you find the value of #cos (theta/2)# given #sintheta=-7/25# and #270<theta<360#?
- How do you find the value of #cot(theta/2)# given #tantheta=-7/24# and #(3pi)/2<theta<2pi#?
- How do you find the value of #sin(theta/2)# given #costheta=(2sqrt5)/5# and #0<theta<90#?
- How do you find the value of #tan(theta/2)# given #costheta=-15/17# and #180<theta<270#?
- How do you find the value of #sin(theta/2)# given #tantheta=2# and #0<theta<pi/2#?
- How do you find the value of #tan15# using the half angle?
- How do you find the value of #sin (157 1/2)#?
- Given #sin theta =-3/5# and #270<theta<360#, how do you find #sin (theta/2)#?
- Given #costheta=24/25# and #270<theta<360#, how do you find #cos(theta/2)#?
- How do you find the exact value of #cos(pi/6)#?
- How do you find the exact value of #tan 0# using the half angle identity?
- How do you find the exact value of #tan 150# using the half angle identity?
- Given #tantheta=-3/4# and #90<theta<180#, how do you find #tan(theta/2)#?
- Given #tantheta=-5/12# and #(3pi)/2<theta<2pi#, how do you find #tan(theta/2)#?
- Given #tantheta=-3/4# and #pi/2<theta<pi#, how do you find #tan(theta/2)#?
- How do you find the exact value of #sec75# using the half angle formula?
- How do you find the exact value of #sec165# using the half angle formula?
- How do you find the exact value of #sec(pi/4)# using the half angle formula?
- How do you find the exact value of #csc ((5pi)/6)# using the half angle formula?
- Given #cottheta=-12/5# and #270<theta<360#, how do you find #csc (theta/2)#?
- Given #cottheta=5/3# and #90<theta<180#, how do you find #cot (theta/2)#?
- How do you find the exact value of #cos54#?
- If #costheta=4/5# and #(3pi)/2<theta<2pi#, how do you find #cos (theta/2)#?
- If #costheta=-4/5# and #pi<theta<(3pi)/2#, how do you find #sin (theta/2)#?
- If #sintheta=-1/3# and #pi<theta<(3pi)/2#, how do you find #tan (theta/2)#?
- If #sintheta=-(2sqrt11)/11# and #pi<theta<(3pi)/2#, how do you find #cos (theta/2)#?
- How do you find the value of #cos((7pi)/8)# using the double or half angle formula?
- How do you find the value of #sin((7pi)/8)# using the double or half angle formula?
- How do you find the value of #sin(112 1/2)# using the double or half angle formula?
- How do you find the value of #sin15# using the double or half angle formula?
- How do you find the value of #cos ((23pi)/12)# using the double or half angle formula?
- How do you find the value of #sin (22 1/2)# using the double or half angle formula?
- How do you find the value of #sin -((5pi)/12)# using the double or half angle formula?
- How do you find the value of #cos ((3pi)/8)# using the double or half angle formula?
- How do you find the value of #sin75# using the double or half angle formula?
- Given #sintheta=-8/17# and #180<theta<270#, how do you find #cos(theta/2)#?
- Given #costheta=4/5# and #270<theta<360#, how do you find #cos (theta/2)#?
- Given #costheta=-4/5# and #-270<theta<-180#, how do you find #sin (theta/2)#?
- Given #costheta=4/5# and #0<theta<pi/2#, how do you find #cos 2theta#?
- Question #f0bb6
- How do you simplify using the half angle formula #sin(22^o 30')#?
- How do you simplify using the half angle formula #cos(-(7pi)/12)#?
- How do you simplify #2cos^2(x/2)-1#?
- How do you simplify #cos^4x-sin^4x#?
- How do you simplify #(sinx-cosx)^2+sin2x#?
- How do you simplify #(2-sec^2x)/(sec^2x)#?
- How do you simplify #(1+sin2x+cos2x)/(1+sin2x-cos2x)#?
- Question #96fc2
- Use#cos(x/2) * cos(x/4) * cos(x/8)# and the half angle formula #[cos(A/2) = sqrt(1+cosA)/2]# to show #2/π = sqrt(2)/2 * (sqrt(2+sqrt2))/2 ...# How?
- What is the general solution of trigonometric equation #sec^2theta+1-3tantheta=0#?
- Question #41db9
- Question #9c7b3
- How do you use the half angle identify to find the exact value of #sin(pi/8)#?
- How do you use the half angle identify to find the exact value of #tan165^circ#?
- How do you use the half angle identify to find the exact value of #tan((5pi)/12)#?
- How do you use the half angle identify to find the exact value of #cos((7pi)/12)#?
- How do you use the half angle identify to find the exact value of #tan22.5^circ#?
- How do you verify the identity #tan2theta=2/(cottheta-tantheta)#?
- How do you verify the identity #1+1/2sin2A=(secA+sinA)/secA#?
- How do you verify the identity #sin(x/2)cos(x/2)=sinx/2#?
- How do you verify the identity #csc2theta=1/2secthetacsctheta#?
- How do you verify the identity #cosA-sinA=(cos2A)/(cosA+sinA)#?
- How do you verify the identity #(sintheta+costheta)^2-1=sin2theta#?
- How do you verify the identity #tan(A/2)=sinA/(1+cosA)#?
- How do you verify the identity #(sintheta+costheta)^2-1=sin2theta#?
- How do you verify the identity #cosx-1=(cos2x-1)/(2(cosx+1))#?
- How do you verify the identity #sec2theta=(cos^2theta+sin^2theta)/(cos^2theta-sin^2theta)#?
- Question #90557
- What is the value of #(2tan(pi/12))/(1-tan^2(pi/12))#?
- Use the formula s = r#omega#t to find the value of the missing variable. Give an exact answer?
- Question #21463
- Question #23c4e
- How do you prove #\cos ^ { 2} \theta = \frac { 1+ \cos 2\theta } { 2}#?
- Question #7783c
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #75^circ#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #165^circ#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #112^circ 30'#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #67^circ 30'#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #pi/8#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #pi/12#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #(3pi)/8#?
- How do you use the half angle formulas to determine the exact values of sine, cosine, and tangent of the angle #(7pi)/12#?
- How do you find the exact values of #sin(u/2), cos(u/2), tan(u/2)# using the half angle formulas given #sinu=5/13, pi/2<u<pi#?
- How do you find the exact values of #sin(u/2), cos(u/2), tan(u/2)# using the half angle formulas given #cosu=3/5, 0<u<pi/2#?
- How do you find the exact values of #sin(u/2), cos(u/2), tan(u/2)# using the half angle formulas given #tanu=-5/8, (3pi)/2<u<2pi#?
- How do you find the exact values of #sin(u/2), cos(u/2), tan(u/2)# using the half angle formulas given #cotu=3, pi<u<(3pi)/2#?
- How do you find the exact values of #sin(u/2), cos(u/2), tan(u/2)# using the half angle formulas given #cscu=-5/3, pi<u<(3pi)/2#?
- How do you find the exact values of #sin(u/2), cos(u/2), tan(u/2)# using the half angle formulas given #secu=-7/2, pi/2<u<pi#?
- How do you use the half angle formulas to simplify the expression #sqrt((1-cos6x)/2)#?
- How do you use the half angle formulas to simplify the expression #sqrt((1+cos4x)/2)#?
- How do you use the half angle formulas to simplify the expression #-sqrt((1-cos8x)/(1+cos8x))#?
- How do you use the half angle formulas to simplify the expression #-sqrt((1-cos(x-1))/2)#?
- How do you find all solutions of #sin(x/2)+cosx-1=0# in the interval #[0,2pi)#?
- How do you find all solutions of #cos(x/2)-sinx=0# in the interval #[0,2pi)#?
- How do you find all solutions of #tan(x/2)-sinx=0# in the interval #[0,2pi)#?
- How do you use the product to sum formulas to write #6sin(pi/4)cos(pi/4)# as a sum or difference?
- How do you use the product to sum formulas to write #4cos(pi/3)sin((5pi)/6)# as a sum or difference?
- How do you use the product to sum formulas to write #cos4thetasin6theta# as a sum or difference?
- How do you use the product to sum formulas to write #3sin2alphasin3alpha# as a sum or difference?
- How do you use the product to sum formulas to write #5cos(-5beta)cos3beta# as a sum or difference?
- How do you use the product to sum formulas to write #cos2thetacos4theta# as a sum or difference?
- How do you use the product to sum formulas to write #sin(x+y)sin(x-y)# as a sum or difference?
- How do you use the product to sum formulas to write #sin(x+y)cos(x-y)# as a sum or difference?
- How do you use the product to sum formulas to write #cos(theta-pi)sin(theta+pi)# as a sum or difference?
- How do you use the product to sum formulas to write #sin(theta+pi)sin(theta-pi)# as a sum or difference?
- How do you use the product to sum formulas to write #10cos75^circcos15^circ# as a sum or difference?
- How do you use the product to sum formulas to write #6sin45^circcos15^circ# as a sum or difference?
- How do you use the sum to product formulas to write the sum or difference #sin60^circ+sin30^circ# as a product?
- How do you use the sum to product formulas to write the sum or difference #cos120^circ+cos30^circ# as a product?
- How do you use the sum to product formulas to write the sum or difference #cos((3pi)/4)-cos(pi/4)#as a product?
- How do you use the sum to product formulas to write the sum or difference #sin((5pi)/4)-sin((3pi)/4)# as a product?
- How do you use the sum to product formulas to write the sum or difference #sin5theta-sin3theta# as a product?
- How do you use the sum to product formulas to write the sum or difference #sin3theta+sintheta# as a product?
- How do you use the sum to product formulas to write the sum or difference #cos6x+cos2x# as a product?
- How do you use the sum to product formulas to write the sum or difference #sinx+sin5x# as a product?
- How do you use the sum to product formulas to write the sum or difference #sin(alpha+beta)-sin(alpha-beta)# as a product?
- How do you use the sum to product formulas to write the sum or difference #cos(phi+2pi)+cosphi# as a product?
- How do you use the sum to product formulas to write the sum or difference #cos(theta+pi/2)-cos(theta-pi/2)# as a product?
- How do you use the sum to product formulas to write the sum or difference #sin(x+pi/2)+sin(x-pi/2)# as a product?
- How do you find all #sin6x+sin2x=0# in the interval #[0,2pi)#?
- How do you find all #cos2x-cos6x=0# in the interval #[0,2pi)#?
- How do you find all #(cos2x)/(sin3x-sinx)# in the interval #[0,2pi)#?
- How do you find all #sin^2 3x-sin^2x=0# in the interval #[0,2pi)#?
- How do you verify the identity #csc2theta=csctheta/(2costheta)#?
- How do you verify the identity #sin(alpha/3)cos(alpha/3)=1/2sin((2alpha)/3)#?
- How do you verify the identity #1+cos10y=2cos^2 5y#?
- How do you verify the identity #(cos3beta)/cosbeta=1-4sin^2beta#?
- How do you verify the identity #sec(u/2)=+-sqrt((2tanu)/(tanu+sinu))#?
- How do you verify the identity #tan(u/2)=cscu-cotu#?
- How do you verify the identity #(sinx+-siny)/(cosx+cosy)=tan((x+-y)/2)#?
- How do you verify the identity #(sinx+siny)/(cosx-cosy)=-cot((x-y)/2)#?
- How do you verify the identity #(cos4x+cos2x)/(sin4x+sin2x)=cot3x#?
- How do you verify the identity #(cost+cos3t)/(sin3t-sint)=cott#?
- How do you verify the identity #sin(pi/6+x)+sin(pi/6-x)=cosx#?
- How do you verify the identity #cos(pi/3+x)+cos(pi/3-x)=cosx#?
- How do you use the half angle formula to determine the exact values of the sine, cosine, and tangent #-75^circ#?
- How do you use the half angle formula to determine the exact values of the sine, cosine, and tangent #15^circ#?
- How do you use the half angle formula to determine the exact values of the sine, cosine, and tangent #(19pi)/12#?
- Question #93462
- Question #17729
- Question #b46d3
- Question #040da
- Question #8977f
- Question #f1955
- Question #518a5
- Simplify #cos60^@cos30^@+sin60^@sin30^@#?
- Question #9b18b
- Half angle identities?