名校
解题方法
1 . 如图,某海面有
三个小岛(小岛可视为质点,不计大小),
岛在
岛正西方向距
岛
千米处,
岛在
岛北偏西
方向距
岛
千米处.以
为坐标原点,
的正东方向为
轴的正方向,
千米为一个单位长度,建立平面直角坐标系.圆
经过
,
三点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/17317510-bfc3-4def-a611-f51d6d3c978e.png?resizew=177)
(1)求圆
的方程;
(2)若圆
区域内有未知暗礁,现有一渔船
在
岛的南偏东
方向距
岛
千米处,正沿着北偏西
方向行驶,若不改变方向,试问该渔船是否有触礁的危险?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5e21d225bf3c159ddf3876fbb8fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/b53c7539ed297ea63b9ace6f5cc58ca8.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/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46af56950c9ea1d66bcd41832a81c111.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/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/17317510-bfc3-4def-a611-f51d6d3c978e.png?resizew=177)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/3b3779b4ea5477aebfe85113b0de1d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
您最近一年使用:0次
2022-11-17更新
|
183次组卷
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3卷引用:浙江省湖州市三贤联盟2022-2023学年高二上学期期中联考数学试题
浙江省湖州市三贤联盟2022-2023学年高二上学期期中联考数学试题广东省佛山市三水区三水中学2022-2023学年高二上学期第二次统考(11月)数学试题(已下线)2.1 圆的方程(八大题型)-【帮课堂】2023-2024学年高二数学同步学与练(苏教版2019选择性必修第一册)
解题方法
2 . 经过椭圆
的左焦点
作倾斜角为
的直线
,直线
与椭圆相交于
两点,则线段
的长为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2021-11-21更新
|
961次组卷
|
4卷引用:浙江省湖州市三贤联盟2021-2022学年高二上学期期中联考数学试题
浙江省湖州市三贤联盟2021-2022学年高二上学期期中联考数学试题浙江省湖州市安吉振民高级中学2023-2024学年高二上学期期中数学试题(已下线)专题10.1—圆锥曲线—椭圆1—2022届高三数学一轮复习精讲精练(已下线)3.1.2 椭圆的几何性质(2)