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在△ABC中,A,B,C三内角所对的边分别为a,b,c,若,,则角A的大小为( ...
在△ABC中,A,B,C三内角所对的边分别为a,b,c,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646787672734/SYS201311012316467876727007_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646787672734/SYS201311012316467876727007_ST/1.png)
,则角A的大小为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646787672734/SYS201311012316467876727007_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646787672734/SYS201311012316467876727007_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646787672734/SYS201311012316467876727007_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231646787672734/SYS201311012316467876727007_ST/5.png)
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