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如图,BC、DE是半径为1的圆O的两条直径,,则的值是( ) A. B. C. ...
如图,BC、DE是半径为1的圆O的两条直径,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/1.png)
的值是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/images2.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102238572514942/SYS201311031022385725149006_ST/5.png)
考点分析:
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