Answer
Negative.
Work Step by Step
$90^{\circ}\lt\theta\lt 180^{\circ}\implies180^{\circ}\lt2\theta\lt 360^{\circ}$
The sine function is negative as the angle $2\theta$ is in between $180^{\circ}$ and $360^{\circ}$( third and fourth quadrants).
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
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: 153
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.
