int_(-4)^(-1)(pi)/(2)d theta

int_(0)^((pi)/(2))(sec theta-tan theta)d theta

int_(-pi/4) ^(pi/4) (e^theta(thetasintheta))/(e^(2theta)-1)d theta=

int_(0)^((pi)/(4))theta sec^(2)theta d theta

int_(-pi/2)^(pi/2) cos theta (1+ sin theta)^(2) d theta =

If int_(0)^((pi)/(2))log sin theta d(theta)=k, then find the value of int_(0)^((pi)/(2))((theta)/(sin theta))^(2)d(theta) in terms of k

int_(pi//4)^(pi//2)(costheta)/((cos\ (theta)/(2)+sin\ (theta)/(2)))\ d theta

The value of int_(pi//4)^(pi//2) cot theta cosec^(2) theta d theta is

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

Evaluate: int_(pi//4)^(pi//2)costheta.cosec^2theta d theta