11.int_(pi/4)^( pi/2)cot xdx

Evaluate the following definite integral: int_(pi/4)^( pi/2)cot xdx

int_(pi/2)^(3pi/2)cos xdx

Evaluate: \int_(pi/4)^(pi/2) cot^2 x dx

int_(pi//4)^(pi//2)cot x dx=

int_(pi/4)^( pi/3)cot^(2)xdx=?

int_(-pi/4)^(pi/4)cos^2xdx

int_(-pi/2)^(pi/2)sin xdx

int_(pi/6)^( pi/4)cot^(2)xdx

Evaluation of definite integrals by subsitiution and properties of its : If I_(n)=int_(pi//4)^(pi//2)cot^(n)xdx, then 100(I_(99)+I_(101))=.......