Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 7 - Applications of Trigonometry and Vectors - Section 7.3 The Law of Cosines - 7.3 Exercises - Page 319: 8b

Answer

Law of Cosines

Work Step by Step

In part (a) of the question, we came to the conclusion that SAS is given. According to the table on page 310 of the text, in case of SAS, the first step is to use the law of cosines to find the third side of the triangle.
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