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(2010•衡阳)如图,已知⊙O的两条弦AC,BD相交于点E,∠A=70°,∠c...
(2010•衡阳)如图,已知⊙O的两条弦AC,BD相交于点E,∠A=70°,∠c=50°,那么sin∠AEB的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230757348967764/SYS201310212307573489677006_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230757348967764/SYS201310212307573489677006_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230757348967764/SYS201310212307573489677006_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230757348967764/SYS201310212307573489677006_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230757348967764/SYS201310212307573489677006_ST/3.png)
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