(1)/(3+2sin x+cos_(x))

int(1)/(3+2 sin x +cos x)dx

Evaluate : int 1/(3+2 sin x + cos x) dx.

int(1)/(3sin^(2) x+4 cos^(2) x)dx

int(1)/(3sin^(2) x+4 cos^(2) x)dx

The value of (2(sin2x+2cos^(2)x-1))/(cos x sin x cos3x+sin3x) is

Prove that nC_ (1) sin x * cos (n-1) x + nC_ (2) sin2x * cos (n-2) x + nC_ (3) sin3x * cos (n-3) x + ... + nC_ ( n) sin nx = 2 ^ (n-1) sin nn