Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 11 - Section 11.3 - The Tangent Ratio and Other Ratios - Exercises - Page 520: 43


The angle of elevation is $72^{\circ}$

Work Step by Step

Let $\theta$ be the angle of elevation. We can find $\theta$: $cos ~\theta = \frac{10~ft}{32~ft}$ $\theta = cos^{-1}~(\frac{10~ft}{32~ft})$ $\theta = 72^{\circ}$ The angle of elevation is $72^{\circ}$
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