Answer
True.
Work Step by Step
This is true because for example in 2D, if the magnitude is $m$ and the direction angle is $\alpha$ then the $x$-component is $m\cos{\alpha}$ and the $y$-component is $m\sin{\alpha}$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 9 - Polar Coordinates; Vectors - 9.6 Vectors in Space - 9.6 Assess Your Understanding - Page 625: 6
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