## Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole

# Chapter 11 - Section 11.2 - The Cosine Ratio and Applications - Exercises: 18

#### Answer

$c\approx9.2$ in. $d\approx7.7$ in.

#### Work Step by Step

$\cos57=\frac{5}{c}$ $\frac{5}{cos57}=c$ $c\approx9.2$ $\sin57=\frac{d}{c}$ $\sin57\approx\frac{d}{9.2}$ $9.2\times\sin57\approx d$ $d\approx7.7$

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