Trigonometry 7th Edition

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

Chapters 1-3 - Cumulative Test - Page 176: 5

Answer

$\theta$ is in Quadrant IV

Work Step by Step

Sine is negative in Quadrants III and IV. Cosine is positive in Quadrants I and IV. Thus, if $\sin{\theta}$ is negative and $\cos{\theta}$ is positive, then the angle $\theta$ must be in Quadrant IV.
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