Answer
The missing angle is $17$ in.
Work Step by Step
1. Find the missing length using the Pythagorean Formula
$ a^{2} + b^{2} = c^{2}$
$c = \sqrt(a^{2} + b^{2})$
$c = \sqrt(15^{2} + 8^{2})$
$c = \sqrt (289)$
$c = 17$ in.
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0134467795
ISBN 13:
978-0-13446-779-5
Chapter 8 - Geometry - 8.8 Pythagorean Theorem - 8.8 Exercises - Page 591: 21
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