Evaluate `int sin^2thetacostheta d theta`

int (sin theta + cos theta) * d theta

int sin^4 theta d theta

Evaluate: int sqrt(tan theta d theta)

int _(0) ^(pi) sin ^(2) theta cos theta d theta

int_(0)^( pi/2) sin^(2)theta cos theta d theta

Evaluate: int cos2 theta ln((cos theta+sin theta)/(cos theta-sin theta))d theta

Evaluate int((2 sin theta + sin 2 theta)d theta)/((cos theta-1)sqrt(cos theta + cos^(2) theta + cos^(3) theta)) .

Evaluate: int sqrt(tan theta)d theta

I=int_(0)^( pi/4)(sin2 theta)/(sin^(2)theta+cos^(4)theta)d theta