Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 5 - Section 5.1 - The Unit Circle - 5.1 Exercises - Page 408: 26

Answer

(0, 1)

Work Step by Step

If you look at the unit circle, you cannot locate $\frac{5\pi}{2}$. You have to subtract 2$\pi$, a full rotation of the unit circle, from $\frac{5\pi}{2}$. Thus, you get $\frac{\pi}{2}$. $\frac{\pi}{2}$ is considered a coterminal angle because it is located between 0 and 2$\pi$. If you look at $\frac{\pi}{2}$ on the unit circle its terminal point is at (0, 1).
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.