如图,
,
分别与
相切于
,
两点,
是优弧
上的一个动点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e570370ff2d9b2909c77ed575c28983e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41db498f025052df2dbb1e50ab672675.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/27/042659e8-8325-4719-b1a0-f04658de6b7d.png?resizew=214)
21-22九年级上·全国·单元测试 查看更多[4]
京改版九年级数学上册 第22章 圆 单元测试(已下线)专题2.44 圆中的动点问题(分层练习)(基础练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(苏科版)(已下线)2023年浙江省嘉兴(舟山)市中考数学真题变式题11-16题(已下线)专题24.50 圆中的动点问题(分层练习)(基础练)-2023-2024学年九年级数学上册基础知识专项突破讲与练(人教版)
更新时间:2023-05-14 09:25:07
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【推荐1】如图,点P是
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【推荐2】平面直角坐标系xOy中,以O为圆心,1为半径画圆,平面内任意点P(m,n2﹣9),且实数m,n满足m﹣n2+5=0,过点P作⊙O的切线,切点为A,当PA长最小时,点P到原点O的距离为__________ .
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