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: 24

Answer

$\alpha\approx46^{\circ}$ $\beta\approx44^{\circ}$

Work Step by Step

$\cos\alpha=\frac{7}{10}$ $\alpha=\cos^{-1}\frac{7}{10}$ $\alpha\approx46$ $\sin\beta=\frac{7}{10}$ $\beta=\sin^{-1}\frac{7}{10}$ $\beta\approx44$
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