Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 1 - Functions - 1.4 Trigonometric Functions and Their Inverse - 1.4 Exercises - Page 48: 74

Answer

$1$

Work Step by Step

We know that $\tan^{-1}(1) = \frac{\pi}{4}$, so substituting in, we have $\tan(\tan^{-1}(1)) = \tan(\frac{\pi}{4}) = 1$
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