Evaluate : `int_(0)^(pi//2)(cosx)/((3cosx+sinx))dx`.

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

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

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

Evaluate : (i) int_(0)^(pi//2)(cosx)/((cos\ (x)/(2)+sin\ (x)/(2)))dx (ii) int_(0)^(pi//2)(cosx)/((1+cosx+sinx))dx

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

Evaluate :- int_(0)^(pi//2)(sinx+cosx)dx

Evaluate :- int_(0)^(pi//2)(sinx+cosx)dx