Answer
Undefined
Work Step by Step
Since $\csc\left(-\pi \right)$ is undefined, then
$$\csc^{-1}\left(\csc\left(-\pi \right)\right) $$ is undefined.
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 7 - Exponential Functions - 7.8 Inverse Trigonometric Functions - Exercises - Page 374: 15
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