Question

i need help with these two problems SUB FORMULA evaluate the integral
problem one
∫0π(1+cos5t)2sin5tdt

problem two
∫π/6π/2cotxcsc3xdx

Answer 1

i know the D, DU

Answer 2

\[\int\limits_{0}^{\pi} \]

\[\int\limits_{\pi/6}^{2/\pi}\]


to make it more clear