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: 107

Answer

75 is in the I quadrant

Work Step by Step

1. 0-90 degrees in the first quadrant. Therefore 0$^{\circ}$$\leq$75$^{\circ}$$\leq$90$^{\circ}$ 2. Coterminal angles always in the same quadrant with original angle, because of full resolutions (2k$\pi$) 75° + 360° = 435° 75° - 360° = -285°
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