Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.7 - Inverse Trigonometric Functions - Exercise Set - Page 626: 38



Work Step by Step

Suppose $\theta =\tan^{-1} (380)$ This gives: $\tan \theta=\tan[\tan^{-1} (380)]$ The inverse property states that $\tan(\tan^{-1} a)=a $ satisfies for every real number $ a $ . Therefore, we have $ \tan[\tan^{-1} (380)]=380$
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