` sin x + sin 3x + sin 5x + sin 7 x = 4 cos x cos 2x sin 4x`

Prove that: sin x + sin 3x + sin 5x + sin 7x= 4 cos x cos 2x sin 4x

Prove that sin x + sin 3x + sin 5x + sin 7x=4 sin 4x cos 2x cos x.

show that sin x+sin 3x +sin 5x +sin 7x =4 sin 4x cos 2x cos x .

Prove that (sin x + sin 3x + sin 5x + sin 7x)/(cos x + cos 3x + cos 5x + cos 7x ) = tan 4x

The period of the function f(x) = (sin x + sin 3x - sin 5x + sin 7x)/(cos x + cos 3x + cos 5x + cos 7x) is

Prove that sin7x + sin5x + sin3x + sinx = 4cosx cos2x sin4x

The value of 2 sin 3x cos 2x is equal to .............. A) sin 5x+ sin x B) sin 3x+ sin x C) sin 7x + sin x D) sin 4x + sin x

prove that sin x+sin3x+sin5x+sin7x=4cos x cos2x sin4x

Prove that : sin x+sin3x+sin5x+sin7x=4cos x cos2x sin4x

Prove the following Identities sin x +sin 2x + sin 4x +sin 5x = 4 cos(x/2).cos((3x)/2)sin3x