[" 3) "],[qquad (pi)/(2)cos x|dx]

int_(0)^(2 pi)|cos x|dx

If A=int_((rho)/(2))^((pi)/(2))cos(sin x)dxB=int_(0)^((pi)/(2))sin(cos x)dx and C=int_(0)^((pi)/(2))cos(x)dx

int_(0)^(pi/2) cos 2x dx

evaluate int_(0)^(pi/2)|cos x|dx

int_(0)^((pi)/(2))log(cos x)dx=

int_(0)^(pi//2) cos 3x dx

int_(0)^(pi//2) cos 3x dx

Evaluate int_0^(pi//2) cos x dx