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

If int_(0)^(a)(dx)/(sqrt(x+a)+sqrt(x))=int_(0)^((pi)/(3))(2tan theta)/(sin2 theta)d theta, then value of a' is a equal to (a>0)(3)/(4)( b) (pi)/(4)(c)(3 pi)/(4) (d) (9)/(16)

int_(0)^(pi)(sin4theta)/(sintheta)d theta=0

Evaluate int _(0)^(pi//2) (cos^(4) theta)/(sin^(4) theta + cos^(4) theta)d theta

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

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

int_(0)^( pi/2)sin^(3)theta d theta=

The value of I(n)=int_(0)^( pi)(sin^(2)n theta)/(sin^(2)theta)d theta is (AA n in N)