## Calculus 10th Edition

$\lim\limits_{x\to \pi^-}cotx$ $=cot\pi$ $=-\infty$ $\lim\limits_{x \to \pi^+} cotx =cot\pi=\infty$ Since, right hand limit is not equal to the left hand limit, $\lim\limits_{x \to \pi} cotx$ does not exist.