Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.3 Verify Trigonometric Identities - Guided Practice for Examples 4, 5, and 6 - Page 927: 6


See below.

Work Step by Step

Using the given identities: $\cot(-\theta)=\frac{\cos(-\theta)}{\sin(-\theta)}=\frac{\cos(\theta)}{-\sin(\theta)}=-\frac{\cos(\theta)}{\sin(\theta)}=-\cot(\theta)$
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