Trigonometry (10th Edition)

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

Chapter 1 - Trigonometric Functions - Section 1.1 Angles - 1.1 Exercises - Page 9: 91

Answer

120 °

Work Step by Step

-5280 $^{\circ}$ is a big negative number compared to 360. The best way to find its coterminal angle is to divide initial angle 360 and find how many times 360 should be added. However, this time we should round favoring larger negative full number. -5280° ÷360° = -14 $\frac{2}{3}$ -5280° +15×360° = 120°
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.