Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 1 - Section 1.3 - Definition I: Trigonometric Functions - 1.3 Problem Set: 45

Answer

Quadrant II and Quadrant III

Work Step by Step

RECALL: The cosine function is negative in Quadrant II and Quadrant III. Thus, if $\cos{\theta}=-0.45$. then the angle $\theta$ terminates either in Quadrant II or Quadrant III.
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