Answer
I Quadrant
Work Step by Step
$\cos\theta$ is positive in I and IV quadrants.
$\tan\theta$ is positive in I and III quadrants.
Both are positive in I quadrant only.
$\cos\theta \gt 0$, $\tan\theta \gt 0$ lies in I quadrant only.
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 1 - Test - Page 44: 19a
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