Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 6 - Section 6.2 - The Law of Cosines - Exercise Set - Page 732: 56

Answer

See explanations.

Work Step by Step

Given an $SSS$ situation, use the Law of Cosines to find the largest angle opposite to the longest side. Then use the Law of Sines to find the larger of the unknown angles. Finally, calculate the third side using the fact that the sum of all angles is $180^\circ$.
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