Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 11 - Section 11.2 - The Cosine Ratio and Applications - Exercises: 23


$\alpha=60^{\circ}$ $\beta=30^{\circ}$

Work Step by Step

$\cos\alpha=\frac{5}{10}$ $\alpha=\cos^{-1}\frac{5}{10}$ $\alpha=60$ $\sin\beta=\frac{5}{10}$ $\beta=\sin^{-1}\frac{5}{10}$ $\beta=30$
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