1 . 若
为
的垂心,
,则
=___ ,
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c99ac203dc24eec48e64b39b9d5f105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca1cdfeb579f49692fb07bf04c514bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0252977d38df16845da8b27885aed987.png)
您最近一年使用:0次
解题方法
2 . 如图,点D为
的边BC上一点,
,
为AC上一列点,满足
,其中实数列
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ff292d5cb7c72257b0ae23ca5a9394.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c290cdc4cf3d6b82581e68ecaf5c7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2103db0056a54c24246af3e9397e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/308ce3f23e49f9b944bd514e985d64bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ff292d5cb7c72257b0ae23ca5a9394.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/89e06f95-4fbf-4f85-b69a-f04a1560f2c2.png?resizew=257)
您最近一年使用:0次