名校
解题方法
1 . 若
为第三象限角,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb5df7dcdc5112c4e8cbe16df671c92.png)
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 在
中,角A,B,C的对边分别为a,b,c.点M是
的内心.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75835ac147d3ab1a8a54f06d1271873d.png)
,则
的最小值为______ ,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75835ac147d3ab1a8a54f06d1271873d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04baa4bae5d52fe9d106aab4334a026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a60237e8d1bca2cbfcabbcef530b7d1.png)
您最近一年使用:0次