Answer
$|v|=\sqrt{a^{2}+b^{2}}.$
Work Step by Step
The magnitude of $V=\langle a, b\rangle=ai+bj$ is given by $$|v|=\sqrt{a^{2}+b^{2}}.$$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 7 - Section 7.5 - Vectors: An Algebraic Approach - 7.5 Problem Set - Page 404: 10
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