名校
1 . 已知点
,圆
.
(1)判断点
与圆
的位置关系,并说明理由;
(2)当
时,经过点
的直线
与圆
相切,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/341c068533648ed9293eae7e9ec46437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893f6f9256d7e91289d294479ec75c13.png)
(1)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a495c197fcbacb8c109aa0060525a371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2022-12-24更新
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2卷引用:陕西省渭南市富平县2021-2022学年高一上学期期末数学试题
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解题方法
2 . 直线l过点
且与圆
相切,则直线l的方程为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80991c1f0c963104740e50cfff6f29a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553340dfccab751666bf4230438cdb46.png)
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3 . 已知圆
:
,且圆外有一点
,过点
作圆
的两条切线,且切点分别为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b36438570d17de72f5d7e3123444f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/88bee8e70f1fab639be1636c7bce0477.png)
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4 . 已知x,y满足
,若不等式
恒成立,则c的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f4a92c6bb099a100ccfd3f0d926b8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65475188b8358ad0544e056380a42cbd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知圆
上有两个点
,且
为直径
(1)求圆
的方程;
(2)若直线
与圆
交于
,求
长度;
(3)已知
,求过点
且与圆
相切的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db6bfed5aae8c885278abb96e8a2bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aacc0092b7cf6df769b0ac128e81c582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6114947179bed8c2c86ac078e2f8497f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d086caf2e13e598f5e1534ecbaa6505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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6 . 过点
作圆
的切线,则切线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7babd44a4f870cb89dd8cec83d71848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a781b62764298c049e23527351bdf913.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:河北省邯郸市涉县第一中学2023届高三上学期期中数学试题
河北省邯郸市涉县第一中学2023届高三上学期期中数学试题广东省番禺中学2022-2023学年高二下学期测试数学试题广东省广州番禺中学2022-2023学年高二下学期月考数学试题江苏省盐城市大丰区等5地(江苏省阜宁中学等2校)2022-2023学年高二上学期1月期末联考数学试题(已下线)专题05 直线与圆、圆与圆的位置关系(考点清单)-2023-2024学年高二数学上学期期中考点大串讲(人教A版2019选择性必修第一册)
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解题方法
7 . 已知圆
,点
.
(1)判断点
与圆
的位置关系;
(2)求过点
的切线方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198b411f5e758e7068d23739306eba3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2b1410f44205658cea90e9ce85101c.png)
(1)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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8 . 古希腊著名数学家阿波罗尼斯发现:平面内到两个定点A、B的距离之比为定值
的点的轨迹是圆,此圆被称为“阿波罗尼斯圆”.在平面直角坐标系
中,已知
,点P满足
,设点P的轨迹为圆
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e78a4356ffc77e9c8f272e23391b20e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9f6d91f04b1bad46c159500244874d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe929df892fcbb1544da9b4c4df6907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.圆C的方程是![]() |
B.过点A向圆C引切线,两条切线的夹角为![]() |
C.过点A作直线l,若圆C上恰有三个点到直线距离为1,该直线斜率为![]() |
D.在直线![]() ![]() |
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解题方法
9 . 经过
向圆
作切线,切线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7f6a03826a5ad351c1f7ca553a6945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
A.![]() |
B.![]() |
C.![]() ![]() |
D.![]() ![]() |
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10 . 已知圆O:
,直线l过点A(0,4).
(1)若直线l与圆O相切,求直线l的方程
(2)若直线l与圆O于E,F两点,且
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
(1)若直线l与圆O相切,求直线l的方程
(2)若直线l与圆O于E,F两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/556f3d62801419af73d2409794759936.png)
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