Answer
csc($\pi$) = undefined
Work Step by Step
Using the unit circle,
csc($\pi$) = undefined
This is because sine is undefined at $\pi$.
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.