Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 11 - Review Exercises - Page 524: 3

Answer

Cosine ratio. $c=23.0$ in.

Work Step by Step

$\cos80^{\circ}=\frac{4}{c}$ $c=\frac{4}{\cos80^{\circ}}$ $c=23.0$ in.
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