The value of `(cos3x)/(2cos2x-1)` is equal to

If cos ecx=(2)/(sqrt(3)) and cot x=(-1)/(sqrt(3))x in[0,2 pi], then the value of cos x+cos2x+cos3x is equal to

The value of 2 sin 3x cos 2x is equal to

The value of 2 sin 3x cos 2x is equal to

The value of cos(sin^(-1)x+cos^(-1)x) is equal to

If 3sin x+4 cos x=2, then the value of 3 cos x -4 sin x is equal to:

If 2 cos x +sin x=1 then value of 7 cos x + 6 sin x lis equal to

The value of int(dx)/(cos^3x sqrtsin2x) is equal to

The value of cos (sin^-1 x + cos^-1 x) is equal to :

x_(1) and x_(2) are two positive value of x for which 2 cos x,|cos x| and 3 sin^(2) x-2 are in GP. The minimum value of |x_(1)-x_(2)| is equal to