Answer
$0$
Work Step by Step
1. Given $\vec v=< 3, 1, -2>$ and $\vec w=$,
we have $\vec v\times\vec w==3i+9j+9k$
2. Thus $\vec v\cdot(\vec v\times\vec w)=(3)(3)+(1)(9)+(-2)(9)=0$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 8 - Polar Coordinates; Vectors - Chapter Review - Review Exercises - Page 655: 44
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