#### Answer

$US = 1.280$

#### Work Step by Step

$\frac{US}{OS} = tan ~52^{\circ}$
$US = (OS) ~tan ~52^{\circ}$
$US = (1) ~tan ~52^{\circ}$
$US = 1.280$

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Published by
Pearson

ISBN 10:
978-0-13-421743-7

ISBN 13:
978-0-13421-743-7

$US = 1.280$

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