题型:单选题
难度:0.65
引用次数:749
题号:11029929
如图,⊙O为
的内切圆,
,点
分别为
上的点,且
为⊙O的切线,则
的周长为( )
![](https://img.xkw.com/dksih/QBM/2020/9/4/2542395252629504/2542598943358976/STEM/570ef6e4-2c7f-4c5f-89b8-47ce37de4b18.png?resizew=263)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3477386a38c8de2d8c7608cf5e51d560.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cca04b2a2b61d62a809776670a60c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://img.xkw.com/dksih/QBM/2020/9/4/2542395252629504/2542598943358976/STEM/570ef6e4-2c7f-4c5f-89b8-47ce37de4b18.png?resizew=263)
A.9 | B.7 | C.11 | D.8 |
更新时间:2020-09-04 17:13:42
|
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为
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![](https://img.xkw.com/dksih/QBM/2018/11/7/2070659889061888/2071186897657856/STEM/7e9b6e4126ca4233be084c8b5f38ccd2.png?resizew=95)
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A.10 | B.11 | C.12 | D.14 |
您最近一年使用:0次
单选题
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适中
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【推荐2】如图,PA,PB 分别与⊙O 相切于 A,B 两点,PO 与 AB 相交于点 C,PA=6,∠APB=60°,则 OC 的长等于()
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/4187f83e-fb78-4c7a-b5f7-15dfeb9d5d8a.png?resizew=147)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/4187f83e-fb78-4c7a-b5f7-15dfeb9d5d8a.png?resizew=147)
A.![]() | B.3 | C.3-![]() | D.6-![]() |
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