已知圆C:
,点A是直线
上的一个动点,过点A作圆C的两条切线,切点分别为P,Q,则线段PQ的长度的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249b37ef4da3e51a86086c2ffc0e0f4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc8e0a4e596e6b0a2f81e1f03fa0430.png)
A.![]() | B.![]() | C.![]() | D.![]() |
23-24高二上·吉林长春·期中 查看更多[2]
更新时间:2023-10-27 22:36:48
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相似题推荐
单选题
|
适中
(0.65)
解题方法
【推荐1】已知直线l经过两直线l1:3x﹣y+12=0,l2:3x+2y﹣6=0的交点,且与直线x﹣2y﹣3=0垂直,则坐标原点
到直线
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐2】已知点
在直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e79b7ee347968a372027f7e7e40aa8.png)
上,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e79b7ee347968a372027f7e7e40aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca16a3d715568b1d9833d73b094a4f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
A.4 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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适中
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解题方法
【推荐1】若直线l:
(t为参数)与曲线C:
(θ为参数)相切,则实数m为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f324310bda03e61fbd92d62cd7299461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc14c2473f5e096939adf39b5245e679.png)
A.-4或6 | B.-6或4 |
C.-1或9 | D.-9或1 |
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【推荐2】已知曲线
的方程为
,曲线
关于点
的对称曲线为
,若以曲线
与两坐标轴的交点为顶点的四边形面积为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d51eefb75cbfa105d315553172c9cceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10749184d5aec5dcac8ef9b11c7f5bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.1 | C.0或![]() | D.0 |
您最近一年使用:0次
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【推荐1】在平面直角坐标系中,
为坐标原点,已知圆
的半径为3,直线
,
互相垂直,垂足为
,且
与圆
相交于
,
两点,
与圆
相交于
,
两点,则四边形
的面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9918513ab5df46b91b9ecede398ec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.10 | B.12 | C.13 | D.15 |
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【推荐2】已知直线
的参数方程为
,圆C的极坐标方程为
, 则 直线
被圆C截得的弦长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4184a68d9b1f15956049764ffc2e9b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925b34a1e7a48f450d883f9a0197e5c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】在一个平面上,机器人到与点
的距离为8的地方绕
点顺时针而行,它在行进过程中到经过点
与
的直线的最近距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a30eef8d5c1d21a2308d5fbbb2f713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44c5ee65689d6a0e93da8fc2bd31eeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b329f034c35cfd30e7124cea63ee3ad.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
【推荐2】已知点
在直线
上,过
作圆
的两条切线,切点为
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1846c1b54b2134a38b277ef4c4e4e6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bae8586becf5d68b5b28d776b4b4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次