pi -- 2 / | | 2 | cot(x)*cos (x) dx | / 0
Integral(cot(x)*cos(x)^2, (x, 0, pi/2))
/ | 2 | 2 sin (x) | cot(x)*cos (x) dx = C - ------- + log(sin(x)) | 2 /
oo
=
43.1388555484324
Use the examples entering the upper and lower limits of integration.