`lim_(x->0)cos(pi/(2cosx))/(sin(sinx^2)`

int_(0)^((pi)/2)(cos2x)/(cosx+sinx)dx=

int_(0)^((pi)/2)(cos2x)/(cosx+sinx)dx=

lim_(x->pi/4)(2sqrt(2)-(cosx+sinx)^3)/(1-sin2x)=

Evaluate lim_(x->pi)(1-sinx/2)/(cosx/2(cosx/4-sinx/4)

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