Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 8 - Right Triangles and Trigonometry - Chapter Test - Page 537: 12



Work Step by Step

In this exercise, we are asked to find the measure of an unknown angle, given its cosine. cos $x$ = $\frac{12}{15}$ Take cos$^{-1}$ of each side to solve for $x$: $x$ = cos$^{-1}$$(\frac{12}{15})$ Evaluate to solve for $x$: $x \approx 36.9$
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.