Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Appendix A - Review - A.2 Geometry Essentials - A.2 Assess Your Understanding - Page A20: 46

Answer

$\frac{5}{\pi}\approx1.6$

Work Step by Step

Given $D=4\ ft, s=20\ ft$, we have the number of revolutions as $n=\frac{20}{4\pi}=\frac{5}{\pi}\approx1.6$
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