Evaluate `int_0^(pi/2) sqrt(cosx)/(sqrt(cosx)+sqrt(sinx))dx`

int_0^(pi/2) sqrt(sinx)/(sqrt(sinx)+sqrt(cosx))dx

int_0^(pi/2) sqrt(cosx)sinxdx

The value of int_0^(pi//2)(sqrt(cosx))/(sqrt(cos x)+sqrt(s in x))dx is pi//2 b. pi//4 c. 0 d. none of these

Evaluate int_0^(pi/2) sqrt(1+sinx) dx

int_(0)^(pi//2)sqrt(1+cosx)dx

Evaluate int_0^(pi/2) x/(sinx+cosx)dx

Evaluate int_0^(pi/2) (sinx-cosx)/(1+sinxcosx)dx

int_(0)^(pi//2)(sinx)/(sqrt(1+cosx))dx

If int_(pi//6)^(pi//3)(sqrt(sinx))/(sqrt(cosx)+sqrt(sinx))dx=(k)/(4) , then value of k equals