Precalculus (10th Edition)

by Sullivan, Michael

Published by Pearson

ISBN 10: 0-32197-907-9

ISBN 13: 978-0-32197-907-0

Chapter 7 - Analytic Trigonometry - Chapter Review - Review Exercises - Page 505: 16

Answer

$5$

Work Step by Step

We know that $f(f^{-1}(x))=x$. For inverse tangent, the value of $x$ (angle measure) should be in the interval $-\infty \leq x\leq \infty$. Hence, $\tan(\tan^{-1})(5)=5.$

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