[5x=sin3x],[" 11."4sin x cos x+2sin x+2cos x+1=0]

Solve the equation 4sin x cos x+2sin x+2cos x+1=0

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

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

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

int(2 sin x+3 cos x+4)/(3 sin x+4 cos x+5)dx.

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

Prove that sin 3x + sin 2x - sin x = 4 sin x cos ""(x)/(2) cos "" ( 3x )/(2)

Prove that: sin 3x + sin 2x - sin x = 4 sin x cos x/2 cos (3x)/2