记△ABC得内角A、B、C的对边分别为a,b,c,已知sinA=3sinB,C=
,c=
.
(1)求a;
(2)求sinA.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
(1)求a;
(2)求sinA.
更新时间:2022-11-08 10:21:07
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【推荐1】设
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【推荐2】已知
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【推荐1】在
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【推荐2】在①
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