Verify Identity: cos5x-cos3x=-8sin^2x(2cos^3x-cosx)

how do you verify cos3x=4cos^3x-cosx???

verify the following identity: cos(A-B)/cosAsinB=tanA+cotB

Verify the Identity. cos^4xcsc^2x = csc^2x + som^2x - 2

prove the identity : cos3x =4 cos^3x-3cosx

Prove the identity cos3x ≡ 4cos^3x - 3cosx Thank you so much for the help!

Verify the following identity: (sin2x)/sin - (cos2x)/cosx=secx

Verify the identity: sin(A+B)/sin(A-B) = tan(A)+tan(B)/tan(A)-tan(B) Explain steps

Verify the following identity. Show all your work. Don't skip any steps. Do not change the right s...

Verify the identity Sin (A+B)/sin (A-B) = tan (A)+tan(B)/tan(A)-tan(B)

Asked by Erik