Calculus (3rd Edition)

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

Chapter 13 - Vector Geometry - 13.4 The Cross Product - Exercises - Page 677: 29


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Work Step by Step

If $ v $ and $ w $ lie in the $ zy $-plane, then according to the right-hand rule, $ v\times w $ will be perpendicular to the $ zy $-plane; that is, it will point in the direction of $ x $ and hence it will be a multiple of $ i $ ($i$ is the unit vector pointing along the $x$ axis).
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