#### Answer

$x=\displaystyle \arccos\frac{y}{5}$

#### Work Step by Step

The goal is to isolate x. Divide with 5...
$\displaystyle \frac{y}{5}=\cos x\qquad$ use the definition of arccos
$\displaystyle \arccos\frac{y}{5}=x$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$x=\displaystyle \arccos\frac{y}{5}$

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