Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 1 - Precalculus Review - 1.4 Trigonometric Functions - Exercises - Page 30: 7

Answer

See drawing

Work Step by Step

We draw the unit circle and the sine and cosine of the most important angles:
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