Question

ʃcot^2 x dx

Answer 1

cot^2x dx = (cosec^2 x -1) dx

\[\int\limits_{}^{}(cosec ^{2}x dx) - \int\limits_{}^{}(1.dx)\]

= -cotx -x

Answer 2

Hint: 1+cot^2=cosec^2 x

Answer 3

hope its cirrect....