已知空间三点A(-2,0,2),B(-1,1,2),C(-3,0,4),则△ABC面积=___________ .
更新时间:2021-12-01 13:22:30
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【推荐1】设
的内角
,
,
的对边分别为
,
,
,若
,且
,则
的面积为______ .
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【推荐2】在
中,角
所对的边分别为
,已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
__________ ,若
,
的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
__________ .
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【推荐2】已知向量
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