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

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

(cos 4x sin 3x -cos 2x sin x )/(sin 4x sin x+ cos 6x cos x)= tan 2x

Prove that (cos x + sin x)/(cos x - sin x) - (cos x - sin x)/(cos x + sin x) = 2 tan x

Prove that (sin 3x - sin x) /( cos x - cos 3x) = cot 2x

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.

(sin x + sin 3x + sin 5x)/(cos x + cos 3x + cos 5x) = tan 3x

Prove that ("sin " 5x -2 "sin " 3x + " sin "x)/(" cos " 5x - " cos " x) = " cosec " 2x -"cot " 2x

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