已知
的内角A,B,C所对的边分别为a,b,c.
,
.
(1)求A;
(2)若BC边上的中线AM为
,求b.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08ffe31de926d6985599727d6ed294c0.png)
(1)求A;
(2)若BC边上的中线AM为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
更新时间:2023-08-02 16:22:34
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