解题方法
1 . 在平面直角坐标系
中,已知点
,圆
:
.
(1)过点M作圆C的切线
,求切线
的方程;
(2)判断直线
:
与圆C是否相交;如果相交,求直线m被圆C截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e39b180d89c401fc48bc9c533031ab4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac5cc668e8073d3ae9eee52652620b7.png)
(1)过点M作圆C的切线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f12fb1428ae06c628dc89fe8d29d1b5.png)
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2021-11-05更新
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592次组卷
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3卷引用:北京市通州区2020-2021学年高二上学期期中数学试题
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2 . 直线:
与圆
的位置关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a8d6991873e79b298984a95b8954b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e948b27f4756cb8ad3cbbbaf13e1f76.png)
A.相交 | B.相切 | C.相离 | D.不确定 |
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2021-04-11更新
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4卷引用:北京市第十二中学2020-2021学年高二上学期期末考试数学试题
北京市第十二中学2020-2021学年高二上学期期末考试数学试题北京市第五十五中学2021-2022学年高二上学期期中试题(已下线)专题05 直线和圆的方程的典型题(一)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)重庆市巫溪县上磺中学校2022届高三(春招班)上学期期末数学试题
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解题方法
3 . 若抛物线
的焦点是
,准线是
,点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c61622eb7fa6fabe6bd361bd5aa6107.png)
是抛物线上的一点.则经过点
,
且与
相切的圆共有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5590fa7c70bd0a95eb7179a39d2157f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c61622eb7fa6fabe6bd361bd5aa6107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344cc24b575f4fd1ea7fe8ce5612fa9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 众所周知的“太极图”,其形状如对称的阴阳两鱼互抱在一起,因而也被称为“阴阳鱼太极图”.如图是放在平面直角坐标系中的“太极图”,整个图形是一个圆形,其中黑色阴影区域在y轴右侧部分的边界为一个半圆.给出以下命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/8b4d16cb-cd87-490e-a886-a4df260f5802.png?resizew=169)
①在太极图中随机取一点,此点取自黑色阴影部分的概率是
;
②当
时,直线
与黑色阴影部分有公共点;
③当
时,直线
与黑色阴影部分有两个公共点.
其中所有正确结论的序号是
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/8b4d16cb-cd87-490e-a886-a4df260f5802.png?resizew=169)
①在太极图中随机取一点,此点取自黑色阴影部分的概率是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9f0255df77526718a46c4e78b78513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0bdc35053d2d32d38016df8b9dfc3c.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4799629218b4b62ffa4082b96888e3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec0bdc35053d2d32d38016df8b9dfc3c.png)
其中所有正确结论的序号是
A.① | B.② | C.③ | D.①② |
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5 . 已知直线
为圆
的切线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a4af6d403d3e8cdb1365fa22ea3383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329006e54941d34aea1eeacff944edb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2019-02-14更新
|
905次组卷
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6卷引用:【全国百强校】北师大实验中学2019届高三第二次模拟考试数学试题
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6 . 已知点
,
,若曲线
上存在点
,使得
,则称曲线
为“
曲线”,给出下列曲线:①
;②
;③
;④
;⑤
.其中是“
曲线”的所有序号为_______________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45293375bd6d5dd24ecd7bb0c6bb6895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d584deba2de24042daa75726c67803d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b16d1b1c4f6ae3b46ce8be922bf5186a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28123e129b6426c9a5f31ad8ec2465b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f1596d3e260ec2198058d1b94ed7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c28b4f0234b698f001e7dec787b4d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d584deba2de24042daa75726c67803d9.png)
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2018-03-10更新
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2卷引用:北京市八一学校 2021届高三年级期末模拟考试数学试题
2011·北京石景山·一模
7 . 在平面直角坐标系
中,已知圆
(
为参数)和直线
(
为参数),则圆C的普通方程为 ,直线
与圆C的位置关系是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d970d6997d65dc6be2c75a261d6e22a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd60bedb50414bdb109cfcfe683db21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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