Answer
$-20$
Work Step by Step
Step 1: $\textbf {u}\cdot\textbf {v}$
Step 2: $\langle -1,3 \rangle\cdot\langle 2,-6 \rangle$
Step 3: $-1(2)+3(-6)$
Step 4: $-2-18$
Step 5: $-20$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 7 - Test - Page 347: 11c
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