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: 25

Answer

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

Work Step by Step

$U=(-8,8),V=(4,8)$ (a) $U+V=(-8,8)+(4,8)$ $U+V=(-8+4,8+8)$ $U+V=(-4,16)$ (b) $U-V=(-8,8)-(4,8)$ $U-V=(-8-4,8-8)$ $U-V=(-12,0)$ (c) $-U=-1\times( -8,8)$ $-U=(-1\times -8, -1 \times8)$ $-U=(8,-8)$
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