Show that `cos^2theta+cos^2theta(alpha+theta)-2cosalphacostheta"cos"(alpha+theta)` is independent of `thetadot`

Show that cos^2theta+cos^2(alpha+theta)-2cosalphacostheta"cos"(alpha+theta) is independent of thetadot

Prove that : 2 sin^2 theta + 4 cos (theta + alpha) sin alpha sin theta + cos 2 (alpha + theta) is independent of theta.

Solve: cos2theta=cos^(2)theta

The expression nsin^(2) theta + 2 n cos( theta + alpha ) sin alpha sin theta + cos2(alpha + theta ) is independent of theta , the value of n is

Prove that cos 4theta–cos 4alpha = 8(cos theta-cos alpha)(cos theta+ cos alpha )(cos theta -sin alpha)(cos theta+sin alpha)

Prove that: cos^2theta=cos^2alpha then theta=npi+-alpha,n in Z

Solve the equation : cos^2 theta = cos^2 alpha

Prove that : cos^3 2theta+3cos2theta=4(cos^6theta-sin^6 theta)

Solve cos theta+cos 2theta+cos 3theta=0 .

Prove (cos 3theta+ 2 cos 5theta+ cos 7theta)/( cos theta+ 2 cos 3theta+ cos 5theta)= cos 2theta- sin 2theta tan 3theta .