△ABC内角A,B,C的对边分别为a,b,c.已知
,则B=_____ .
![](https://img.xkw.com/dksih/QBM/2016/3/11/1572532943994880/1572532949655552/STEM/8acdaccc7e1c43ffa3b859d724e4f3dd.png?resizew=142)
更新时间:2016-12-04 03:49:23
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【推荐2】在△ABC中,角A,B,C满足sin Acos C-sin Bcos C=0,则三角形的形状为________ .
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