Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 11 - Section 11.1 - The Sine Ratio and Applications - Exercises - Page 497: 33



Work Step by Step

Let $\alpha$ be the angle formed by the ladder and the wall. $\sin\alpha=\frac{4}{10}$ $\alpha=\sin^{-1}\frac{4}{10}$ $\alpha\approx24^{\circ}$
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