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△ABC的内角A,B,C的对边分别为a,b,c,若,则a等于( ) A. B.2...
△ABC的内角A,B,C的对边分别为a,b,c,若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102253405158476/SYS201311031022534051584007_ST/0.png)
,则a等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102253405158476/SYS201311031022534051584007_ST/1.png)
B.2
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102253405158476/SYS201311031022534051584007_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102253405158476/SYS201311031022534051584007_ST/3.png)
考点分析:
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