Question

integral sec^3 x.cotgx.senx .dx

Answer 1

$\int\limits_ {} \, sec^3x*cotgx*senx*dx = \int\limits { \frac{1}{cos^3x}* \frac{cosx}{senx} *senx } \, dx = \int\limits {sec^2x} \, dx = \\ =tgx+c$