Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.3 Verify Trigonometric Identities - 14.3 Exercises - Skill Practice - Page 928: 36

Answer

See below.

Work Step by Step

Using the given identities: $\ln |\sec x|=\ln|\frac{1}{\cos x}|=\ln|\cos^{-1} x|=-\ln|\cos x|$ Thus we proved what we had to.
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