Prove that : `sin 2x + 2 sin 4x + sin 6x = 4 cos^2 x sin 4x`.

sin2x+2sin4x+sin6x= 4cos^(2)xsin4x

Prove that: quad sin2x+2sin4x+sin6x=4cos^(2)x sin4

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

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

Prove that: 3 (sin x-cos x) ^ (4) +6 (sin x + cos x) ^ (2) +4 (sin ^ (6) x + cos ^ (6) x) -13 = 0

Prove that: (i) sin 3x+"sin" 2x-"sin" x = 4 sin x cos((x)/(2))cos((3x)/(2)) (ii) ("sin" 3x+"sin" x)"sin" x+(cos 3x-cos x)cos x=0.

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

Prove that: sin^(2)6x-sin^(2)4x=sin2x sin10x

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