Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 7 - Applications of Trigonometry and Vectors - Section 7.5 - Applications of Vectors - 7.5 Exercises - Page 343: 29

Answer

(a) $U+V= (0,12)$ (b) $U-V=(-16,-4)$ (c) $-U=(8,-4)$

Work Step by Step

$U=(-8,4)$ $V=(8,8)$ (a) $U+V=(-8,4)+(8,8)$ $U+V=(-8+8,4+8)$ $U+V=(0,12)$ (b) $U-V=(-8,4)-(8,8)$ $U-V=(-8-8,4-8)$ $U-V=(-16,-4)$ (c) $-U=-1\times U=-1\times (-8,4)=(8,-4)$
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