Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 7 - Section 7.6 - Vectors: The Dot Product - 7.6 Problem Set - Page 411: 19



Work Step by Step

Since $\textbf {u}=\langle -4,-3 \rangle$ and $\textbf {v}=\langle -1,-2 \rangle$, ${\textbf {u}\cdot\textbf {v}}=-4(-1)+(-3)(-2)=4+6=10$.
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