(cos x+sin x)/(cos x-sin x)-(cos x-sin x)/(cos x+sin x)=2tan2x

2tan2x = (cos x + sin x) / (cos x-sin x) - (cos x-sin x) / (cos x + sin x)

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

Prove that: (i) (1+"sin" 2theta-cos 2theta)/(1+"sin" 2theta+cos 2theta)="tan" theta . (ii) 2 tan 2x=(cos x+"sin" x)/(cos x-"sin" x)-(cos x-"sin" x)/(cos x+"sin" x) .

Show that (sin 8x cos x - sin 6x cos 3x)/(cos 2x cos x - sin 3x sin 4x) = tan 2x

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

Prove the following Identities (cos 4x sin 3x - cos 2xsin x)/(sin 4x.sin x +cos 6x.cos x)= tan 2x

(sin x + sin 3x )/( cos x + cos 3x )= tan 2x

(sin x + sin 3x )/( cos x + cos 3x )= tan 2x

(sin x + sin 3x )/( cos x + cos 3x )= tan 2x

(sin x + sin 3x )/( cos x + cos 3x )= tan 2x