Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 8 - P.S. Problem Solving - Page 626: 10d



Work Step by Step

The vector point west: $-i$ $\theta=cos^{-1}[\frac{(40i-120j)(-i)}{\sqrt {(40i-120j)(40i-120j)}\sqrt 1}]=cos^{-1}\frac{-40}{126.49}=108.44$
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