Answer
$cot\theta$ and $csc\theta$
Work Step by Step
If the terminal side of an angle lies along the negative x-axis, it is equivalent to $\theta=180^\circ$, thus $cot\theta$ and $csc\theta$ are undefined.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 5 - Trigonometric Functions - Test - Page 563: 12
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