Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 9 - Trigonometric Identities, Models, and Complex Numbers - Review Exercises and Problems for Chapter Nine - Page 393: 10

Answer

$$\cos \left(x\right)$$

Work Step by Step

Simplifying the expression using the Laws of Trigonometry, we find: $$\frac{\frac{\cos \left(x\right)}{\sin \left(x\right)}}{\frac{1}{\sin \left(x\right)}} \\ \frac{\cos \left(x\right)\sin \left(x\right)}{\sin \left(x\right)} \\ \cos \left(x\right)$$
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