Answer
$1.3157\ rad$ or $75.4^\circ $
Work Step by Step
Using the given formula $\theta=2tan^{-1}\frac{21.634}{x}$ with $x=28\ mm$, we have $\theta=2tan^{-1}\frac{21.634}{28}\approx1.3157\ rad$ or $75.4^\circ $
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
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 627: 95
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