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: 19

Answer

$a=5$ cm $b=5$ cm

Work Step by Step

$\cos45=\frac{b}{5\sqrt2}$ $5\sqrt2\times\cos45=b$ $b=5$ $\sin45=\frac{a}{5\sqrt2}$ $5\sqrt2\times\sin45=a$ $a=5$
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