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: 113

Answer

-61$^{\circ}$ in the IV quadrant

Work Step by Step

1. Coterminal angles always in the same quadrant with original angle, because of full resolutions (2π) -61° + 360° = 299° -61° - 360° = -421° 2. 270-360 degrees in the fourth quadrant. Therefore 270$^{\circ}$≤299$^{\circ}$≤360$^{\circ}$ its in the fourth quadrant
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