如图,点
、
分别在直线
的上方.
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804607518744576/2805855144312832/STEM/7964b923-9541-45c0-aa16-ed7c98e557be.png?resizew=231)
(1)在直线
上找到点
,使得
最短.(要求:保留作图痕迹,不要求写作法)
(2)在(1)的条件下,若点
、
到直线
的距离分别为
、
,且点
在点
的东北方向,则
的最短距离为______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2021/9/9/2804607518744576/2805855144312832/STEM/7964b923-9541-45c0-aa16-ed7c98e557be.png?resizew=231)
(1)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac656ec89607f52b5353dba400fab6.png)
(2)在(1)的条件下,若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b966764ef08a4f9ddc892de14e7762f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372672db0415d63ec963e6df7a2e9cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ac656ec89607f52b5353dba400fab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
更新时间:2021-09-11 15:49:48
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