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 - Page 9: 96

Answer

630°, -90°

Work Step by Step

1. To find the positive coterminal angle you just need to add 360. 270° +360° = 630° 2. To find the negative coterminal angle you just need to subtract 360 270° -360° = -90° If you want to find more coterminal angles you just need to add or subtract more 360, depending on the sign.
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