1 . 已知圆
,
,过点
向圆引两条切线
、
,
、
为切点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05c938fd42f5cb0b9d21cd44acbec6e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc12c55f2676aeb4f696f4a84e4d65b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a0cc78c3e209937bd33da16b04044a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/f05c938fd42f5cb0b9d21cd44acbec6e.png)
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2 . 已知圆
和圆
,过动点
分别作圆
,圆
的切线
,
(A,
为切点),且
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2390c3620d076f200ec790b8d0c09a8.png)
![](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/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb5c4882a2713d22cc8bb19cc51548b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce5dcaffd91bc44cda4a2e44000ae73.png)
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3 . 已知动点
在抛物线
上,过点
引圆
的切线,切点分别为A、B,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84df2d39fa36c3f4ee72a0817fd2b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
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4 . 过点
作圆O:
的两条切线,则两条切线夹角的正弦值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
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5 . 已知圆
:
,过点
作圆
的切线,切点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f232a34711a14a99116248495526.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd8b64ef4c3a8c2382adb986d302c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f232a34711a14a99116248495526.png)
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名校
6 . 已知圆
,直线
,过直线
上一点
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/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6d2269875c74ebc793c8e4328c77f1.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771a7a9e485517a3c1a529608104f32f.png)
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7 . 过抛物线
的焦点
作圆
的两条切线,切点分别为
,
,若
为等边三角形,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8f39c669699aef9d2a48277f90adda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9bf6bda9363dbef5f6ff4bf6a5edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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2024-01-25更新
|
111次组卷
|
2卷引用:四川省凉山州2023-2024学年高二上学期期末检测数学试卷
8 . 已知
,直线
为
上的动点.过点
作
的切线
,切点分别为
,当
最小时,点
的坐标为__________ ,直线
的方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca7516825c36fe07c9350da42efda17e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eda5b56749384035dff39db6dd30482.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/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9ce08214287236b3eb3f490a15e28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2024-01-17更新
|
297次组卷
|
6卷引用:辽宁省县级重点高中协作体2023-2024学年高二上学期期末数学试题
辽宁省县级重点高中协作体2023-2024学年高二上学期期末数学试题河南省南阳地区2023-2024学年高二上学期期末热身摸底联考数学试题贵州省黔东南州2023-2024学年高二上学期期末检测数学试题湖南省张家界市民族中学2023-2024学年高二下学期入学考试数学试题(已下线)专题1 直线与圆的位置关系【练】(压轴小题大全)(已下线)专题2 与圆有关的最值问题【讲】(压轴小题大全)
名校
9 . 已知P为直线
上一动点,过点P作圆
的切线,切点分别为A,B,则当四边形PAOB面积最小时,直线AB的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc8e0a4e596e6b0a2f81e1f03fa0430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
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10 . 过点
作圆
的切线
,
,则切线长为__________ ;过切点A,B的直线方程为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ad4f92ee1f742cd54a8f16756cbd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e6a95d85a6bfc628a8e63dd71ffcd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
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