如图所示,在直角梯形
中,
为线段
上一点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32d63cce0ab17c11e553849b132da5d.png)
,则
为__________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfe2a58326612fcabd34fd4402a66ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d32d63cce0ab17c11e553849b132da5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6641484cec34026d9e258496a0fd18a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/6/6fb7023f-2019-4e74-af72-c3bb06a3ce7b.png?resizew=229)
更新时间:2017-02-27 14:37:38
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