2.quad (sin3x+sin1)>111quad 1quad (cos31quad cos x)cos x=0

(sin 3x + sin x ) sin x + (cos 3x - cos x) cos x =0

(sin 3x + sin x ) sin x + (cos 3x - cos x) cos x =0

(sin 3x + sin x ) sin x + (cos 3x - cos x) cos x =0

(sin 3x + sin x ) sin x + (cos 3x - cos x) cos x =0

(sin 3x + sin x) sin x + (cos 3x - cos x) cos x =0

Prove that: (sin 3x + sin x) sin x + (cos 3x -cos x) cos x = 0

Prove that: (sin 3 x +sin x) sin x + (cos 3x - cos x) cos x = 0

Prove that: (sin3x+sin x)sin x+(cos3x-cos x)cos x=0

(sin3x + sin x) sin x + (cos3x-cos x) cos x = 0

Some examples Type: 1 (1) (sin5A-sin3A)/(cos5A+cos3A)=tan A(2)(sin3x+sin x)sin x+(cos3x-cos x)cos x=0 (3) Prove that cot4x(sin5x+sin3x)=cot x(sin5x-sin3x)