Question

integral sinx ^2/(1+cosx).dx

Answer 1

Integral Sin^2 x /(1+cos x). dx =int (2sin x/2*cos x/2)^2 /(1+1-2sin^2 x/2) * dx =int (4sni^2 x/2 * cos^2 x/2) /(2cos^2 x/2) *dx =int 2sin^2 x/2 dx = int (1-cos x) dx = x - sin x +c