Answer
$$-\sin \left(θ\right)$$
Work Step by Step
Simplifying the expression, we find:
$$\frac{\cos ^2\left(θ\right)-1}{\sin \left(θ\right)} \\ \frac{-\sin ^2\left(θ\right)}{\sin \left(θ\right)} \\ -\sin \left(θ\right)$$
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 9 - Trigonometric Identities, Models, and Complex Numbers - 9.2 Identities, Expressions, and Equations - Exercises and Problems for Section 9.2 - Exercises and Problems - Page 363: 14
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