Trigonometry 7th Edition

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

Chapter 8 - Section 8.1 - Complex Numbers - 8.1 Problem Set - Page 426: 67

Answer

$\frac{1}{5}+\frac{3}{5}i$

Work Step by Step

Step 1: $\frac{2i}{3+i}\times\frac{3-i}{3-i}$ Step 2: $\frac{2i(3-i)}{(3+i)(3-i)}$ Step 3: $\frac{6i-2i^{2}}{3^{2}-i^{2}}$ Step 4: $\frac{6i-2(-1)}{3^{2}-(-1)}$ Step 5: $\frac{6i+2}{9+1}$ Step 6: $\frac{2+6i}{10}$ Step 7: $\frac{2(1+3i)}{10}$ Step 8: $\frac{(1+3i)}{5}$ Step 9: $\frac{1}{5}+\frac{3}{5}i$
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