Trigonometry (10th Edition)

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

Chapter 7 - Applications of Trigonometry and Vectors - Section 7.4 Vectors, Operations, and the Dot Product - 7.4 Exercises - Page 330: 48

Answer

$\langle -1.5321,-1.2856\rangle$

Work Step by Step

Using a calculator, $\textbf{v}=\langle 2\cos(-140^{\circ}),2\sin(-140^{\circ}) \rangle\approx\langle 2(-0.76604),2(-0.64279) \rangle\approx\langle -1.5321,-1.2856\rangle$
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