Answer
$x=sec(y)$, $\ge1$, $0,\pi$
Work Step by Step
Based on the definition of inverse secant function, $y=sec^{-1}x$ means $x=sec(y)$, where $|x|\ge1$ and $0\le y\le\pi$ where $y\ne\frac{\pi}{2}$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 6 - Analytic Trigonometry - Section 6.2 The Inverse Trigonometric Functions (Continued) - 6.2 Assess Your Understanding - Page 480: 4
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