" 7."sin3x+sin2x-sin x=4sin x cos((x)/(2))cos((3x)/(2))

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: \ sin3x+sin2x-sin x=4sin xcos(x/2)cos((3x)/2)

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

sin3x+sin2x-sinx=4sinxcos(x/2)cos(3x/2)

Prove that sin3x+sin2x-sinx=4sinxcos(x/2)cos((3x)/2)

Prove that sin3x+sin2x-sinx=4sinxcos(x/2)cos((3x)/2)

Prove that sin3x+sin2x-sinx=4sinxcos(x/2)cos((3x)/2)

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)

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