Answer
domain: $(-\infty,-1]\cup[1,\infty)$
range : $[0,\frac{\pi}{2})\cup(\frac{\pi}{2},\pi]$
Work Step by Step
The domain is $(-\infty,-1]\cup[1,\infty)$ while the range is $[0,\frac{\pi}{2})\cup(\frac{\pi}{2},\pi]$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.