名校
1 . 在△ABC中,角A,B,C所对的边分别为a,b,c,
,
的平分线交
于点D,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0cd86e30c16ac977a5707cd76ba7b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e8ee2d09b0b352351f9574c67c0e18.png)
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20-21高一·上海·假期作业
2 . 已知
,且
为第三象限角,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c379958a73f9d62c97bb3e1ce694b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次