. Integrate tan theta- cot theta. tellllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
. Integrate tan theta- cot theta. tellllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll





-dt/t = -logt = log(sectheta). Similarly you can find cot theta.




