Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 5 - Trigonometric Identities - Section 5.2 Verifying Trigonometric Identities - 5.2 Exercises: 25

Answer

$$1$$

Work Step by Step

$$\sec r\cos r$$ Rewrite $\sec r$ using Reciprocal Identities $$\frac{1}{\cos r}\times\cos r$$ $$= 1$$
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