已知在
中,
,
,设
是
的内心,若
,则![](https://img.xkw.com/dksih/QBM/2013/11/28/1571415183228928/1571415188701184/STEM/f7b1b4b3243849639d34f79a53b43546.png?resizew=48)
__
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/2013/11/28/1571415183228928/1571415188701184/STEM/333e042fce194cf4ab62f89ebce17625.png?resizew=89)
![](https://img.xkw.com/dksih/QBM/2013/11/28/1571415183228928/1571415188701184/STEM/9ff2b262f57d4c85b85b39fff3c63047.png?resizew=53)
![](https://img.xkw.com/dksih/QBM/2013/11/28/1571415183228928/1571415188701184/STEM/4eb920d9002045f6b0494be8425f436f.png?resizew=16)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/2013/11/28/1571415183228928/1571415188701184/STEM/ed3fd332c86f42c5a7150a66ccb2b164.png?resizew=125)
![](https://img.xkw.com/dksih/QBM/2013/11/28/1571415183228928/1571415188701184/STEM/f7b1b4b3243849639d34f79a53b43546.png?resizew=48)
13-14高三上·江苏泰州·期中 查看更多[2]
更新时间:2016-12-02 13:54:49
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