Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 8 - Applications of Trigonometric Functions - 8.3 The Law of Cosines - 8.3 Assess Your Understanding - Page 540: 63

Answer

The square of the length of any side is equal to the sum of the squares of the two other sides, minus two times the product of the lengths of those two sides and the cosine of their included angle.

Work Step by Step

The square of the length of any side is equal to the sum of the squares of the two other sides, minus two times the product of the lengths of those two sides and the cosine of their included angle.
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