如图,
,
切
于点
,
,直线
切
于点
,交
于
,交
于点
,若
的周长是
,则
的长是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/025aac13-f373-47d8-8815-29c7294c28a4.png?resizew=190)
![](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/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a8ceee5fa19abfde9173aac721b35b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8e9157a918321232302175a7e02221.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/025aac13-f373-47d8-8815-29c7294c28a4.png?resizew=190)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-02-23 19:57:52
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【推荐1】一直角三角形的斜边长为c,其内切圆半径是r,则三角形面积与其内切圆的面积之比是( )
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【推荐2】如图,PA、PB、CD是⊙O的切线,切点分别是A、B、E,CD分别交PA、PB于C、D两点,若∠APB=60°,则∠COD的度数( )
![](https://img.xkw.com/dksih/QBM/2019/2/22/2146239339577344/2147084167684097/STEM/a19cda324ee74107bc2ed5fe32d8e66d.png?resizew=113)
![](https://img.xkw.com/dksih/QBM/2019/2/22/2146239339577344/2147084167684097/STEM/a19cda324ee74107bc2ed5fe32d8e66d.png?resizew=113)
A.50° | B.60° | C.70° | D.75° |
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