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: 74

Answer

$\frac{4}{61}+\frac{17}{61}i$

Work Step by Step

$\frac{2+i}{5-6i}$ =$\frac{2+i}{5-6i}\times\frac{5+6i}{5+6i}$ =$\frac{2(5+6i)+i(5+6i)}{5^{2}-(6i)^{2}}$ =$\frac{10+12i+5i+6i^{2}}{25-36i^{2}}$ =$\frac{10+17i+6(-1)}{25-36(-1)}$ =$\frac{4+17i}{25+36}$ =$\frac{4+17i}{61}$ =$\frac{4}{61}+\frac{17}{61}i$
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