Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 5 - Review Exercises - Page 274: 30a



Work Step by Step

BD$^2$+AD$^2$=AB$^2$ AB=$\sqrt {34}$ $\frac{DC+BD}{AB}$=$\frac{AB}{BD}$ $\frac{DC+3}{\sqrt {34}}$=$\frac{\sqrt {34}}{3}$ 3DC+9=34 3DC=25 DC=8$\frac{1}{3}$
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