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(2001•内江)已知⊙O的半径为3,△ABC内接于⊙O,AB=3,AC=3,D...
(2001•内江)已知⊙O的半径为3,△ABC内接于⊙O,AB=3
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,AC=3
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019105429181254687/SYS201310191054291812546002_ST/1.png)
,D是⊙O上一点,且AD=3,则CD的长应是( )
A.3
B.6
C.
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D.3或6
考点分析:
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