名校
解题方法
1 . 在平面直角坐标系
中,已知
的顶点坐标分别是
,记
外接圆为圆
.
(1)求圆
的方程;
(2)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/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46bd4a1a238fc0911b1d2471374d8138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)在圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c89434482e1eb20f0c388c6a542af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2021-12-14更新
|
470次组卷
|
6卷引用:福建省南安市侨光中学、昌财实验中学2021-2022学年高二上学期第二次阶段考数学试题
名校
解题方法
2 . 如图,某海面上有
三个小岛
面积大小忽略不计
,
岛在
岛的北偏东
方向且距
岛
千米处,
岛在
岛的正东方向且距
岛
千米处
以
为坐标原点,
的正东方向为
轴的正方向,建立如图所示的平面直角坐标系
圆
经过
三点.
(1)求圆
的方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca6fa9955690cec01db601e3abce0c.png)
(2)若圆
区域内有未知暗礁,现有一船在
岛的南偏西
方向且距
岛
千米的
处,正沿着北偏东
方向行驶,若不改变方向,试问:该船有没有触礁的危险
请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5e21d225bf3c159ddf3876fbb8fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05185a60d5d37c5af32ffea71066b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5e21d225bf3c159ddf3876fbb8fb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/5/5485333c-62f5-4a22-853c-4f8f37a6f6ba.png?resizew=145)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ca6fa9955690cec01db601e3abce0c.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82bbee662e242611afdbdae4b8a36a7c.png)
您最近一年使用:0次
3 . 已知圆
的方程为
.
(1)写出圆心
的坐标与半径长;
(2)若直线
过点
,试判断与圆
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579d7b3a6cdcf8aafc7defe020e4aeb5.png)
(1)写出圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2020-07-30更新
|
523次组卷
|
3卷引用:福建省普通高中2019-2020学年高二6月学业水平合格性考试数学试题
福建省普通高中2019-2020学年高二6月学业水平合格性考试数学试题(已下线)第二章 直线和圆的方程+章末测试-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教A版)云南省怒江州泸水市怒江新城新时代中学2022-2023学年高二上学期期中考试数学试题
解题方法
4 . 已知直线
,圆
.
(1)试证明:不论
为何实数,直线
和圆
总有两个交点;
(2)当
取何值时,直线
被圆
截得的弦长最短,并求出最短弦的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd55f837e9c4e6bba1163ef13edd09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eba6d86f05a7c3c6f0167bd076f9c99.png)
(1)试证明:不论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2020-06-26更新
|
543次组卷
|
3卷引用:福建省普通高中2020-2021学年高二学业水平合格性考试(会考 )数学模拟试题(二)
5 . 已知曲线
的极坐标方程是
,设直线
的参数方程是
(
为参数).
(1)将曲线
的极坐标方程和直线
的参数方程化为直角坐标方程;
(2)判断直线
和曲线
的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a547d38bda9f5b6613c969a8cae51f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08134085b4dc317afdda5f47fea3b110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)将曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2022-09-06更新
|
211次组卷
|
4卷引用:2016-2017学年福建省四地六校高二下学期第一次联考(3月)文数试卷
名校
解题方法
6 . 如图,已知一艘海监船O上配有雷达,其监测范围是半径为25km的圆形区域,一艘外籍轮船从位于海监船正东40km的A处出发,径直驶向位于海监船正北30km的B处岛屿,速度为28km/h.
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878792043724800/2881433669926912/STEM/231ff463-2763-4403-9260-ac54ae890631.png?resizew=160)
(1)求外籍船航行路径所在的直线方程;
(2)问:这艘外籍轮船能否被海监船监测到?若能,持续时间多长?(要求用坐标法)
![](https://img.xkw.com/dksih/QBM/2021/12/23/2878792043724800/2881433669926912/STEM/231ff463-2763-4403-9260-ac54ae890631.png?resizew=160)
(1)求外籍船航行路径所在的直线方程;
(2)问:这艘外籍轮船能否被海监船监测到?若能,持续时间多长?(要求用坐标法)
您最近一年使用:0次
2021-12-27更新
|
314次组卷
|
2卷引用:福建省厦门市湖滨中学2023-2024学年高二上学期期中数学试题
名校
7 . 已知圆
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3445947fa34dd409a1354786e6c4a579.png)
(1)求证:对
,直线l与圆C总有两个不同的交点;
(2)设l与圆C交于A,B两点,若
,求l的倾斜角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e948b27f4756cb8ad3cbbbaf13e1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3445947fa34dd409a1354786e6c4a579.png)
(1)求证:对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
(2)设l与圆C交于A,B两点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce673a587696689e3b9d6cefecf891b.png)
您最近一年使用:0次
2019-12-12更新
|
593次组卷
|
8卷引用:福建省龙岩第一中学2022-2023学年高二上学期第二次月考数学试题
福建省龙岩第一中学2022-2023学年高二上学期第二次月考数学试题上海市向明中学2018-2019学年高二上学期12月月考数学试题青海省西宁市城西区第二中学2019-2020学年高二上学期期末数学试题湖北省孝感市部分重点学校2019-2020学年高二上学期10月联考数学试题上海市向明中学2020-2021学年高二上学期12月月考数学试题四川省南充市西充中学2021-2022学年高二上学期期中数学(理)试题上海市晋元高级中学2022-2023学年高二下学期期中数学试题(已下线)人教A版高二上学期【期中押题卷02】(测试范围:第1~2章)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
解题方法
8 . 已知圆C:
与直线l:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45af4fa45634408f1cb2e44aeda628a.png)
(1)证明:直线
和圆
恒有两个交点;
(2)若直线
和圆
交于
两点,求
的最小值及此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a32c27759b330c663dca1db376d102e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45af4fa45634408f1cb2e44aeda628a.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2022-11-22更新
|
176次组卷
|
3卷引用:福建省德化第八中学2022-2023学年高二上学期12月月考数学试题
名校
9 . 已知圆
,直线
.
(1)判定直线l与圆C的位置关系,并说明理由;
(2)若圆C与直线相交于点A和点B,求弦AB的中点M的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb03419e0b08b0bf3d788518e95d090f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c815c7e35f18f7ebe3465fd69ff323f8.png)
(1)判定直线l与圆C的位置关系,并说明理由;
(2)若圆C与直线相交于点A和点B,求弦AB的中点M的轨迹方程.
您最近一年使用:0次
名校
解题方法
10 . 已知椭圆
经过点
,且两个焦点
,
的坐标依次为
和
.
(1)求椭圆C的标准方程;
(2)设E,F是椭圆C上的两个动点,O为坐标原点,直线OE的斜率为
,直线OF的斜率为
,若
,证明:直线EF与以原点为圆心的定圆相切,并写出此定圆的标准方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a95717b79a3a459f3ccd20d0896e371.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/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
(1)求椭圆C的标准方程;
(2)设E,F是椭圆C上的两个动点,O为坐标原点,直线OE的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/257beb71337358f5ccc57219d9153666.png)
您最近一年使用:0次
2020-09-22更新
|
246次组卷
|
6卷引用:福建省泰宁第一中学2018-2019学年高二上学期第一阶段考试数学(理)试题