Calculus (3rd Edition)

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

Chapter 13 - Vector Geometry - 13.1 Vectors in the Plane - Exercises - Page 649: 7


$$ (\cos 20, -\sin 20).$$

Work Step by Step

Recall that $\cos(-x)=\cos(x)$. Recall that $\sin(-x)=-\sin(x)$. Find the components of $ w $ $$(\cos (-20), \sin(-20))=(\cos 20, -\sin 20).$$
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