如图,PA与⊙O相切于点A,线段PO交⊙O于点C,过点C作⊙O的切线交PA于点B.若PC=4,AB=3,则⊙O的半径等于( )
A.4 | B.5 | C.6 | D.12 |
更新时间:2021-12-20 19:26:13
|
相似题推荐
单选题
|
适中
(0.65)
【推荐1】如图,
,
均是边长为
的等边三角形,点D是边
的中点,直线
相交于点M.当
绕点D旋转时,线段
的长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8310338fea6a984c8f400adde15f7bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9860befaf3394a18c113f79298cf8e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e5e61804ce550636a0354e0a78a22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,已知直线
与
轴交于点
,与
轴交于点
,点
在线段
上,
关于
轴的对称点为
,点
从
的运动过程中,
中依次出现的特殊三角形为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9427de5d22d37859a110dbb234313c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba837391bb4af88a9a5042248b81e2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d487e6769c9f24ec76ccc83b8de4199a.png)
A.直角三角形![]() ![]() ![]() |
B.直角三角形![]() ![]() ![]() |
C.直角三角形![]() ![]() ![]() |
D.直角三角形![]() ![]() ![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,在Rt△ABC中,∠C=90°,AC=5,⊙O是△ABC的内切圆,半径为2,则图中阴影部分的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/5/11/2976879804334080/2978737558503424/STEM/2b104956-d68c-4ac4-90de-f82d4cb43ce6.png?resizew=229)
![](https://img.xkw.com/dksih/QBM/2022/5/11/2976879804334080/2978737558503424/STEM/2b104956-d68c-4ac4-90de-f82d4cb43ce6.png?resizew=229)
A.30﹣4π | B.![]() | C.60﹣16π | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,P是⊙O外一点,射线PA、PB分别切⊙O于点A、点B,CD切⊙O于点E,分别交PA、PB于点D、点C,若PB=4,则△PCD的周长( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/5ddf0e44-1ff5-49b0-9b00-921470ccc4ae.png?resizew=172)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/5ddf0e44-1ff5-49b0-9b00-921470ccc4ae.png?resizew=172)
A.4 | B.6 | C.8 | D.10 |
您最近一年使用:0次