如图,
为
的直径,
与
相切于点
,弦
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf312b70601b0657de36880f6f474bb.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1df7caed01a23c69b891fb7852f335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a427709e6575431882877cda3b59ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf312b70601b0657de36880f6f474bb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/383bc245-b1f3-4303-b785-9d1d1299960f.png?resizew=133)
更新时间:2020-05-16 06:26:27
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【推荐1】如图
的圆心A的坐标是
,在直角坐标系中,
半径为2,P为直线
上的动点过P作
的切线,切点为Q,则切线长
的最小值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
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【推荐2】如图,
与
相切于点A,
交
于点B,点C在
上,且
.若
,
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323b786e35c9b762d00f2b2ef74ce1d6.png)
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