Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.2 - Trigonometric Functions: The Unit Circle - Exercise Set: 71

Answer

$-2a$

Work Step by Step

RECALL: (1) $\sin{(-t)} = -\sin{t}$ (2) $\cos{(-t)} = \cos{t}$ (3) $\tan{(-t)} = -\tan{t}$ Use the given and rule (1) above to obtain: $=-\sin{t} -\sin{t} \\=-a - a \\=-2a$
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.