Answer
$b^{2} = a^{2} + c^{2} - 2ac(cos(B))$
Work Step by Step
$b^{2} = a^{2} + c^{2} - 2ac(cos(B))$ is the standard form.
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 8 - 8.2 - Law of Cosines - 8.2 Exercises - Page 573: 1
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