Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 6 - Test - Page 287: 2a

Answer

$y=\frac{2\pi}{3}$

Work Step by Step

RECALL: $y=\arccos{x} \longrightarrow \cos{y}=x$ Note that: $\cos{(\frac{2\pi}{3})} = -\frac{1}{2}$ Thus, $y=\arccos{(-\frac{1}{2})}\longrightarrow y=\frac{2\pi}{3}$
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.