Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 6 - Review Exercises - Page 286: 58

Answer

$x = 2~arccos(\frac{y}{3})$

Work Step by Step

$y = 3~cos~\frac{x}{2}$ $cos~\frac{x}{2} = \frac{y}{3}$ $\frac{x}{2} = arccos(\frac{y}{3})$ $x = 2~arccos(\frac{y}{3})$
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