Elementary Geometry for College Students (5th Edition)

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

Chapter 11 - Test - Page 535: 17

Answer

$a^{2}$=$b^{2}$+$c^{2}$-2bc cos a

Work Step by Step

We have to consider the other two sides (b and c) and the opposite angle (a).
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