名校
1 . 已知圆
,直线
,点P为
上一动点.过点P作圆M的切线
,切点为
,当
最小时,直线
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f85591e60e4312115c5068564b114b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbb5f75f035bc58830b9df835287b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e58e5a299e7b6b508c61244b93ae1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9ce08214287236b3eb3f490a15e28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 已知圆
,直线
经过点
,且
与圆
相切,则
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f62686f6f9118291c444a8d5a4d0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-08更新
|
274次组卷
|
2卷引用:北京市清华大学附属中学2023-2024学年高二下学期期中考试数学试题
2024高三·全国·专题练习
名校
3 . 设P为直线
上的动点,PA,PB为圆C:
的两条切线,切点分别为A,B,则四边形
的周长的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42498f6e0fc9a61c9857b70a87f02c5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a353d1a988596880c0a48c2303d20c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5e6be4c100935913a35fa89967ccdf.png)
A.3 | B.![]() | C.4 | D.![]() |
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4 . 若直线
与曲线
,
都相切,则
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7186a0a143460905e117dd9dc17c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e6bedb066ee81c299629cccf35f186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
5 . 过点
作圆
的切线
,直线
与直线
平行,则直线
与
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577620a3b886932bbcf2f2f3dd725d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb542e6dfdaad8d50d9206f90d85b22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe0a98defcad0583c073d828c074730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.4 | B.2 | C.![]() | D.![]() |
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2024-04-16更新
|
356次组卷
|
2卷引用:云南省昆明市云南师范大学附属中学2023-2024学年高二下学期教学测评月考(五)数学试题
2024·全国·模拟预测
6 . 若直线
上仅存在一点
,使得过点
的直线与圆
切于点
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd6e4185a3de5a361c4a87c62a770a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50878e35cc3c632655e64a99fef5e9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.3 | D.![]() |
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7 . 设M是圆C:
上的动点,
是圆的切线,且
,则点N到点
距离的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b217dbec62d527b0e05a5b962770d193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b258d236f06d587db7fcd11983394d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41167177b65969b1d159a83c3f04d853.png)
A.4 | B.5 | C.6 | D.16 |
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8 . 若点P是直线l:
上的一动点,过点P作圆C:
的两条切线,切点分别为A,B,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbcf2f1418ad0104d9c3221f08f93c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a392337c91fd9fe51f670e2249dc4857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
A.![]() | B.1 | C.![]() | D.2 |
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9 . 莱莫恩
定理指出:过
的三个顶点
作它的外接圆的切线,分别和
所在直线交于点
,则
三点在同一条直线上,这条直线被称为三角形的
线.在平面直角坐标系
中,若三角形的三个顶点坐标分别为
,则该三角形的
线的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00af47f02e78f8a9c7c6e79d03fdaf16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746ee1515a178948b04f535705c6f738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fc107c4b33d6dd648b396156494ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fc107c4b33d6dd648b396156494ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7045eebf12e8b3e1c016360a9be4da25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf1bdc954fe4b0c7b973e8b9a6249c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7045eebf12e8b3e1c016360a9be4da25.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-03-22更新
|
954次组卷
|
2卷引用:安徽省阜阳第一中学2023-2024学年高二下学期4月月考数学试题
10 . 已知圆
的圆心为抛物线
的焦点,且与直线
相切,再由直线
上的一点向该圆引切线,则这条切线长的最小值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d7c223faadd624d524399fc0f7f39e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc13ca9230c91e43250632a0db2ac12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c608def11fa0e2b34f05592ef1d11fd8.png)
A.1 | B.![]() | C.3 | D.![]() |
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