Answer
False.
$cos\frac{θ}{2}\gt0$
Work Step by Step
If $\frac{\pi}{2}\ltθ\lt\pi$, then $\frac{\pi}{4}\lt\frac{θ}{2}\lt\frac{\pi}{2}$. That is, $\frac{θ}{2}$ is in the Quadrant I. So:
$cos\frac{θ}{2}\gt0$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 7 - Review Exercises - Page 553: 81
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
