Prove that: `sin20^0sin40^0sin80^0=(sqrt(3))/8`

Prove that : sin3x=3sinx-4sin^(3)x

sinx+sin3x+sin5x=0

The value of sin 20^(circ) sin 40^(circ) sin 60^(circ) sin 80^(circ) is

Prove the following int_(0)^(pi/2)sin^(3)xdx=2/3

Prove that: (sin^(3) theta + cos^(3) theta)/(sin theta + cos theta) = 1-sin theta cos theta

Solve sin 2x -sin 4x+sin 6x=0

Prove that int_(0)^(a)f(x)dx=int_(0)^(a)f(a-x)dx and hence evaluate int_(0)^(pi//2)(2log sin x-log sin2x)dx .

Solve sin 2x - sin 4x + sin 6x =0.

sin 2x+cosx=0

Prove that int_(0)^(a) f(x) dx = int_(0)^(a) f(a - x)dx and hence evaluate the following: (c) int_(0)^(pi/2)(sqrt(sinx))/(sqrt(sin x) + sqrt(cos x))dx