1 . 过直线
上的动点
向圆心为
,半径为2的圆引两条切线
(
为切点),则四边形
的面积的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2924070a023138483fbbbf0ccaa73b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a56e5ddc6dc057aa4076130cc6ce19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283b0cef5d644b8dceb910ce2c76f21c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 过点
与圆
相切的两条直线的夹角为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6d91b75bcc149e13767c8b61a76634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知点
是直线
上一动点,
与
是圆C:
的两条切线,M、N为切点,则四边形
的最小面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650353eda77d014bb42d185bd967e549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd8b64ef4c3a8c2382adb986d302c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3029ea5516e56e8d20594c71929624f.png)
A.4 | B.![]() | C.2 | D.1 |
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4 . 椭圆
的左、右焦点分别是
,
,
是椭圆
上的点,过
作圆
的一条切线,切点为
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8868e2ba4401d727f1bcb1f5483b48f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482ff8024cfe853fa8569b3e8cd6a58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ce8eed2660a33465a7f764e76cdba8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 在平面直角坐标系
中,已知圆
,若圆
上存在点P,由点P向圆C引一条切线,切点为M,且满足
,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dac36040d1be181a70527b0875701f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70506184daab999669b48b26e6aa00f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb49d4cf219518e1f21375a14bfb38e8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-30更新
|
806次组卷
|
7卷引用:广东省广州市天河区2023-2024学年高二上学期期末数学试题
6 . 已知圆
,点
是直线
上的动点,
是圆
的切线,
为切点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4ee22fbd02d14f7764a81694df5d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ce6e716f2a085b503b1ba7c8fc00cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.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/ab7aaa871ceb78e5b80b531a7cf4f1c9.png)
A.3 | B.![]() | C.5 | D.![]() |
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7 . 过
轴上一点
作圆
的两条切线,切点为A,B,当切线长
最短时,则劣弧长
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bddf46e1b8395edb130c35e3e6316128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce5dcaffd91bc44cda4a2e44000ae73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c4c5ccff7359ee4bd83c72758379a5d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-25更新
|
93次组卷
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2卷引用:内蒙古呼伦贝尔市海拉尔第二中学2023-2024学年高二上学期期末考试数学试题
名校
8 .
是直线
上的一动点,过
作圆
的两条切线,切点分别为
,则四边形
面积的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5d58c8c55fc8dac4fcdf3221300316.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af91a5b12a1097ecbe62a01ae5bab12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283b0cef5d644b8dceb910ce2c76f21c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-22更新
|
308次组卷
|
3卷引用:广东省深圳外国语学校、执信中学2023-2024学年高三上学期期末校际联考数学试卷
广东省深圳外国语学校、执信中学2023-2024学年高三上学期期末校际联考数学试卷河北省石家庄市部分重点高中2023-2024学年高三上学期2月期末数学试题(已下线)专题06 直线与圆、椭圆方程(分层练)(三大题型+12道精选真题)
9 . 过点
作圆
的两条切线,设切点为A,B,则切点弦AB的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ae163d074478b46903927567a300bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-22更新
|
859次组卷
|
2卷引用:云南省曲靖市第一中学2024届高三上学期教学质量监测数学试题(五)
10 . 已知
,直线
为
上的动点,过点
作
的切线
,切点分别为
,当
最小时,直线
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7516825c36fe07c9350da42efda17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985c6d4558a9694b3f25743986bbeb98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.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.![]() |
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