Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 7 - Trigonometric Identities and Equations - 7.1 Fundamental Identities - 7.1 Exercises - Page 659: 61



Work Step by Step

$(1-\cos\theta)(1+\sec\theta)$ $=1+\sec\theta-\cos\theta-\cos\theta\sec\theta$ $=1+\sec\theta-\cos\theta-1$ $=\sec\theta-\cos\theta$
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