Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - 13.6 Apply the Law of Cosines - 13.6 Exercises - Skill Practice - Page 892: 6

Answer

Law of cosines

Work Step by Step

If we are given two sides of a triangle and the angle measure between them, we can directly use law of cosines to find the third side of the triangle. Therefore, in this case we can only use "law of cosines".
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