Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 1 - Trigonometric Functions - Section 1.1 Angles - 1.1 Exercises: 4

Answer

a. 72° b. 162°

Work Step by Step

a. 90°-18°=72° b. 180°-18°=162°
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