若△ABC的内角A,B,C的对边分别为a,b,c,
,
,且△ABC的面积为
,则a等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d09196d6643e64ab5b9b5df02d98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
更新时间:2022-05-08 20:02:14
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解题方法
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