Answer
$7$
Work Step by Step
Step 1: $\langle 6,-1 \rangle \cdot \langle 2,5 \rangle$
Step 2: $6(2)+(-1)(5)$
Step 3: $12-1(5)$
Step 4: $12-5$
Step 5: $7$
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 - Applications of Trigonometry and Vectors - Section 7.4 Vectors, Operations, and the Dot Product - 7.4 Exercises - Page 331: 71
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