Answer
$1$
Work Step by Step
We know that $\tan^{-1}(1) = \frac{\pi}{4}$, so substituting in, we have $\tan(\tan^{-1}(1)) = \tan(\frac{\pi}{4}) = 1$
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
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
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