Answers

The Brainliest Answer!
2016-01-11T19:21:40+05:30
By AA similarity , ΔDAC is similar to ΔDCB. so,CD/BD=AD/CD.
⇒ CD^2=AD*DB
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2016-01-11T19:24:57+05:30
Cd is perpendicular on ab so by pythagoras theoram CD²= AD²-DB²
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