Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 7 - Test - Page 416: 24

Answer

$-5\textbf {i}+41\textbf {j}$

Work Step by Step

Step 1: $3\textbf {U}+5\textbf {V}$ Step 2: $3(5\textbf {i}+12\textbf {j})+5(-4\textbf {i}+\textbf {j})$ Step 3: $15\textbf {i}+36\textbf {j}-20\textbf {i}+5\textbf {j}$ Step 4: $15\textbf {i}-20\textbf {i}+5\textbf {j}+36\textbf {j}$ Step 5: $-5\textbf {i}+41\textbf {j}$
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