1 . 已知圆
,直线
.
(1)试确定圆
的圆心和半径;
(2)求证:直线
恒过定点;
(3)直线
被圆
截得的弦何时最长,何时最短?并求得截得的弦长最短时
的值以及最短弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920bd07e70b67be4b02dc676e44cb29f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/768c28b763533923dfa532eb5635f4c5.png)
(1)试确定圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2 . 已知
的三个顶点分别是
,
,
.
(1)求
边上的高所在的直线方程;
(2)求
的外接圆的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36828be50c7405bb08ec09c64c80bd5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73fd212960b334f424f5a4db082a5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/546f454829f5b02d0f3ead56d60bea96.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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3 . 如图,圆
经过点
,
,且与
轴的正半轴相切于点
,
为坐标原点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/8285584b-825b-47cb-a426-f7a8e6445f18.png?resizew=181)
(1)求圆
的标准方程;
(2)已知点
在圆
上,过点
的直线
交圆
于
、
两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c9dcfd9f4c5298035870cb88a34169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c699a757a7ee06c063150def9c5dffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/7/8285584b-825b-47cb-a426-f7a8e6445f18.png?resizew=181)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5ce23462dfd28929430b74b9590940.png)
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名校
解题方法
4 . 已知圆
过点
,且圆
与两坐标轴均相切.
(1)求圆
的标准方程;
(2)若半径小于
的圆
与直线
交于
、
两点,____ ,求
的值.
从下列两个条件中任选一个补充在上面问题中并作答:条件①:
;条件②:
.
注:如果选择多个条件分别作答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4218a7ce9c3485e06201b0b7d85ca1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若半径小于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a8ba78658831f9fce13aafa1d93973.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/294f5ba74cdf695fc9a8a8e52f421328.png)
从下列两个条件中任选一个补充在上面问题中并作答:条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac34466d49ce1fe5dd29d02f02e5cd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680d22907862a7ea2a113569aca0e67.png)
注:如果选择多个条件分别作答,按第一个解答计分.
您最近一年使用:0次
2023-11-14更新
|
207次组卷
|
5卷引用:安徽省安庆市宿松中学2022-2023学年高二下学期期中联考数学试题(A卷)
安徽省安庆市宿松中学2022-2023学年高二下学期期中联考数学试题(A卷)安徽省太和县第二中学2022-2023学年高二下学期期中联考数学试题(B卷)(已下线)专题2.9 直线与圆的方程大题专项训练(30道)-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)浙江省绍兴市第一中学2023-2024学年高二上学期期中数学试题吉林省四平市第一高级中学2023-2024学年高二上学期第二次月考数学试题
解题方法
5 . 已知圆C过点A(8,-1),且与直线
相切于点B(3, 4).
(1)求圆C的方程;
(2)过点P(-3,0)的直线
与圆C交于M,N两点, 若
为直角三角形,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b172ffec2e6cc2c1cf86a85ba5da8b28.png)
(1)求圆C的方程;
(2)过点P(-3,0)的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037d45b0332e6394e37e517f3a57500c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599fa74fddd8015e645bf701879393b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037d45b0332e6394e37e517f3a57500c.png)
您最近一年使用:0次
6 . 若直线
是圆
的一条对称轴, 则实数a的值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b798d04eb5553b1613068234fa14b514.png)
您最近一年使用:0次
名校
7 . 圆
的圆心坐标为______ ,半径为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7292089757667c63c01172cc4c9bbec5.png)
您最近一年使用:0次
名校
8 . 已知圆的方程为
,则圆
的半径为
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解题方法
9 . 以
为圆心,1为半径的圆的标准方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
您最近一年使用:0次
解题方法
10 . 在平面直角坐标系中,经过
,
,
三点的圆的标准方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd243fab0af865af67a2ab817e909cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ae1b361135eaae8d172cb7aa490d6c.png)
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