Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 5 - Trigonometric Functions - 5.2 Trigonometric Functions - 5.2 Exercises - Page 520: 114

Answer

Quadrant III

Work Step by Step

Because $\cos\theta\lt0$ in quadrants II and III and $\sin\theta\lt0$ in quadrants III and IV, both conditions are met only in quadrant III.
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