名校
解题方法
1 . 如图,某湿地公园的形状是长方形
,
,E为
的中点,线段
为公园内部的人行道
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/adb06943-79ff-42c3-8834-ccf79299deb4.png?resizew=109)
(1)记
的外接圆为圆M,以
为直径的圆为圆N,判断圆M与圆N的位置关系,并说明理由;
(2)今欲在人行步道(线段
)上设一观景台P,已知当观景台P在过A,B两点的圆与线段
相切的切点处时,有最佳观赏和拍摄的效果,若该圆的半径小于50,问观景台P设在何处时,观赏和拍摄的效果最佳?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75384a369b3f5e085cbdcba068ca513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/19/adb06943-79ff-42c3-8834-ccf79299deb4.png?resizew=109)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)今欲在人行步道(线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
2023-10-30更新
|
102次组卷
|
2卷引用:吉林省松原市前郭尔罗斯蒙古族自治县第五高级中学2023-2024学年高二上学期期中数学试题
名校
2 . 已知圆
.
(1)求过点
且与圆
相切的直线方程;
(2)已知点
.则在圆
上是否存在点
,使得
?若存在,求点
的个数,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc0964b3f16f3323ac3825548475a47.png)
(1)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c8fc676fa43fc29e43070508cd8164.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/23fbdda162279d6b0b157b41b7912c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2022-11-26更新
|
863次组卷
|
4卷引用:吉林省通化市梅河口市第五中学2023-2024学年高二上学期期中数学试题
名校
3 . 在平面直角坐标系xOy中,已知圆
:
,
:
,及点
和
.
(1)求圆
和圆
公切线段的长度;
(2)在圆
上是否存在点P,使得
?若存在,求点P的个数;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f143ca890a2e92f28a942cbad62781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc69807c8ca3b7991bf601d9eb3b1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266504a4bd910b292c74765dc9772f62.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)在圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9e13fd8d7227cdcd3a7dc025afa22e.png)
您最近一年使用:0次