71 Answered Questions for the topic Trigonometry Identities
Simple Trig, got lost and need help.
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Sin(45-x)=cos(45+x) prove the identity
Can someone walk me through simplifying sec(?)?^2 * cot(?) * cos(?) =
Write the expression as the sine or cosine of an angle.
Solve for x in the equation 4cos4x=0
If cos(pi/2-X) =4/5. Find sin(-x)
Find the exact value if sin x= -5/13, cos y= 4/5, 3pi/2<x<2pi, and 3pi/2<y<2pi what is tan(x+y)
Please help me with these identity proofs!!
cos(11pi/12) using Sum and difference identities
sin^2 x/2 = tanx-sinx/2tanx
Express cos4x as a trig function of x
Verify/prove: (1-cos^2x)(1+cos^2x) = 2sin^2x-sin^4x
Find the solutions of the equation that are in the interval [0, 2p). (Enter your answers as a comma-separated list.
prove the identity
How can I solve sin(2x) = sin(x/2) for all values of x?
Solve for all values of 2sinx-1=0. in terms of pi
How to prove this identity