Answers edited by Nghi N

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• Question #23b7a
  
• How do you use the product to sum formulas to write #10cos75^circcos15^circ# as a sum or difference?
  
• How do you factor #24x ^ { 3} + 60x ^ { 2} - 168x - 420#?
  
• How do you solve the equation #sqrt3sectheta+2=0# for #-pi<=theta<=3pi#?
  
• What is the solution set to #x^3 + x^2 - 4x ≥ 4#?
  
• Question #fcb2e
  
• Question #d49bf
  
• How do you find the value of the discriminant and state the type of solutions given #9m^2+6m+6=5#?
  
• How do you verify the identity #sec(u/2)=+-sqrt((2tanu)/(tanu+sinu))#?
  
• How do you find the exact values of #costheta# and #sintheta# when #tantheta=-1/2#?
  
• Which quadrant does the terminal side of #-(5pi)/6# lie?
  
• How do you solve #3 cot 2x - sqrt 3 = 0#?
  
• How do you find all six trigonometric function of #theta# if the point (-5,12) is on the terminal side of #theta#?
  
• Question #46d1d
  
• Question #af5d8
  
• Question #72dcf
  
• Question #3960a
  
• How do you evaluate #cos((13pi)/8)#?
  
• Question #970f7
  
• How do you find the exact functional value sec (-11pi/12) using the cosine sum or difference identity?
  
• How do you find the exact value of #sin(u+v)# given that #sinu=-7/25# and #cosv=-4/5#?
  
• Question #d5864
  
• Question #3aca5
  
• Question #bc7b6
  
• How do you solve #49x ^ { 2} - 56x + 15= 0#?
  
• Question #968f0
  
• Question #b922b
  
• How do you solve #sinx+cosx=1#?
  
• How do you use a calculator to evaluate #cos78^circ11' 58''#?
  
• How do you solve #10tanx-5=0#?
  
• Question #ea459
  
• How do you solve #tan(2x + pi/3) = 1# from 0 to 2pi?
  
• How to calculate this? #sin^2(110^@)+sin^2(200^@)#.
  
• How do you find all six trigonometric function of #theta# if the point #(-3,sqrt7)# is on the terminal side of #theta#?
  
• How do you express #cos((27pi)/8)# as a trig function of an angle in Quadrant I?
  
• How do you factor #x^2 - 22x + 120#?
  
• Solve the equation #2secxsinx+2=4sinx+secx# in the interval #[0^@,360^@]#?
  
• Question #95289
  
• How do you find the product of all six trigonometric functions of an angle theta in standard position whose terminal side passes through #(- sqrt 3, 1)#?
  
• If #sin theta - cos theta = 1/2 #, what is the value of #sin theta + cos theta#?
  
• Question #a9636
  
• How do you find the exact values of the six trigonometric function of #theta# if the terminal side of #theta# in the standard position contains the point (0,-6)?
  
• What are the solutions to #5x^2+27x+10=0#?
  
• Question #c5acc
  
• Question #28c03
  
• How do you find the six trigonometric functions of 420 degrees?
  
• Question #6b440
  
• How do you find the value for #sin2theta#, #cos2theta#, and #tan2theta# and the quadrant in which #2theta# lies given #tantheta=-5/12# and #theta# is in quadrant II?
  
• How do I find the value of cos 5pi / 6?
  
• How do you factor and simplify #tan^2x-cot^2x#?
  
• How do you use the angle sum or difference identity to find the exact value of cos((11pi)/12)#?
  
• Question #86fbc
  
• Question #b8ee8
  
• How do you solve #10x^2-31x+15=0# using the quadratic formula?
  
• How do you factor #-4x^2+5x-12#?
  
• How to compare the AC Method (factoring by grouping) and the new Transforming Method in solving quadratic equations?
  
• How do you find the value for #sin2theta#, #cos2theta#, and #tan2theta# and the quadrant in which #2theta# lies given #sintheta=-sqrt10/10# and #theta# is in quadrant IV?
  
• Prove that #cos 3x = 4cos^3 x - 3cos x# ?
  
• How do you find the exact solutions of the equation #sin2x-sinx=0# in the interval #[0,2pi)#?
  
• How do you factor #3x^2-7x+4#?
  
• Question #e1c1e
  
• How do you find the roots, real and imaginary, of #y= 0.5x^2-0.6x +3.659 # using the quadratic formula?
  
• Solve the equation #cos3t=cos2t#?
  
• Question #5076c
  
• Question #6eeed
  
• How do you factor #4s^2-26st+81t^2# using the perfect squares formula?
  
• What is the period of #y=sin4theta#?
  
• How do you solve #2x ^ { 2} + x = 5#?
  
• Question #16d46
  
• Question #883c2
  
• How do you evaluate #sin [2 Tan^-1 (-2)]#?
  
• How do you express #sin(pi/12) * cos(pi/8 ) # without products of trigonometric functions?
  
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