Answer
$x = 2~arccos(\frac{y}{3})$
Work Step by Step
$y = 3~cos~\frac{x}{2}$
$cos~\frac{x}{2} = \frac{y}{3}$
$\frac{x}{2} = arccos(\frac{y}{3})$
$x = 2~arccos(\frac{y}{3})$
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
978-0-13-421743-7
ISBN 13:
978-0-13421-743-7
Chapter 6 - Review Exercises - Page 292: 58
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