在△ABC中，若a = 2 ,,, 则B等于_刷题宝

题干

在△ABC中，若a = 2 ,

,

, 则B等于

A：或

B：

C：或

D：

上一题下一题 0.0难度选择题更新时间:2018-09-21 06:40:27

答案(点此获取答案解析）

A

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