Algebra and Trigonometry 10th Edition

Published by Cengage Learning

Chapter 8 - 8.4 - Vectors and Dot Products - 8.4 Exercises - Page 595: 12

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Work Step by Step

We know that $\langle u_1,u_2 \rangle \cdot \langle v_1,v_2\rangle$ is equal to $u_1v_1 +u_2v_2$. Thus, we find that the dot product of these two vectors is: $$(1)(-2)+(-2)(-1)=0$$

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