Answer
cos($\frac{9\pi}{2}$) = 0
Work Step by Step
Note: $\frac{9\pi}{2}$ = $\frac{\pi}{2}$
Using the unit circle,
cos($\frac{9\pi}{2}$) = 0
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - 6.3 - Trigonometric Functions of Any Angle - 6.3 Exercises - Page 454: 41
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.
