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: 6a



Work Step by Step

Lowercase letters represent sides of the triangle while uppercase letters represent angles of the triangle. Since a,c and A are given, this means that two sides and one angle is given. In addition, the angle A is not the included angle as it is not between a and c. It is clear that SSA is given since SSA refers to side-side-angle where the given angle is not the one included between the two given sides.
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