Answer
(a) $U+V=(8,0)$
(b) $U-V=(0,16)$
(c) $-U=(-4,-8)$
Work Step by Step
$U=(4,8), V=(4,-8)$
(a)
$U+V=(4,8)+(4,-8)$
$-(4+4,8-8)$
$=(8,0)$
(b)
$=U-V$
$=(4,8)-(4,-8)$
$=(0,16)$
(c)
$-U= -1\times(4,8)=(-4,-8)$
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
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: 27
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