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如图,BC为⊙O的直径,弦AC=3cm,AB=4cm,AD⊥AB于D.则sin∠...
如图,BC为⊙O的直径,弦AC=3cm,AB=4cm,AD⊥AB于D.则sin∠BAD的值是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164825771896514/SYS201310221648257718965009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164825771896514/SYS201310221648257718965009_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164825771896514/SYS201310221648257718965009_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164825771896514/SYS201310221648257718965009_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022164825771896514/SYS201310221648257718965009_ST/3.png)
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