`int_((-pi)/(4))^((pi)/(4))Cos^(2)xdx`

Evaluate int_((-pi)/4)^((pi)/4)sin^2x""dx

Evaluate int_(-pi//4)^(pi//4)x^(3)sin^(2)xdx

int_(-pi//4)^(pi//4) "cosec"^(2) x dx

((sqrt(2)+1)198)/(pi)int_((pi)/(4))^((3pi)/(4))(phidphi)/(1+sinphi) equal to ______.

Evaluate : int_(-pi/2)^(pi/2)xcos^2 xdx

Evaluate : int_(-pi/2)^(pi/2)xcos^2 xdx

int_((pi)/4)^((pi)/2)(2cosecx)^17 dx

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

int_(0)^( pi/4)sec^(2)xdx

I_(1)=int_(0)^((pi)/2)(sinx-cosx)/(1+sinxcosx)dx, I_(2)=int_(0)^(2pi)cos^(6)dx , I_(3)=int_(-(pi)/2)^((pi)/2)sin^(3)xdx, I_(4)=int_(0)^(1) In (1/x-1)dx . Then