Answer
$\cos\theta$
Work Step by Step
Using the given identities: $\frac{\sin(-\theta)}{\tan(-\theta)}=\frac{\sin(-\theta)}{\frac{\sin(-\theta)}{\cos(-\theta)}}=\cos (-\theta)=\cos\theta$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 14 Trigonometric Graphs, Identities, and Equations - Chapter Test - Page 969: 7
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