Answer
$1$
Work Step by Step
Convert the angle measure to degrees to obtain:
$=\frac{\pi}{2} \cdot \frac{180^o}{\pi} = 90^o$
Thus,
$\csc{(\frac{\pi}{2})}
\\= \csc{90^o}$
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.