已知圆
内有一点
,过点P作直线l交圆C于A、B两点.
(1)当l经过圆心C时,求直线l的方程;
(2)当弦AB被点P平分时,求直线l的方程;
(3)当直线l的倾斜角为
时,求弦AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b65c8d0c10c9d2c669f3e6afc480b734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bd4e5049fa304e4d352bfe6dee455d.png)
(1)当l经过圆心C时,求直线l的方程;
(2)当弦AB被点P平分时,求直线l的方程;
(3)当直线l的倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
22-23高三·全国·课后作业 查看更多[2]
更新时间:2023-01-30 17:26:27
|
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】已知点
,
,
,写出直线
,
,
的点斜式、两点式和一般式方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115a0c87ac14dbb770c95d74d6e26073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266c42a10c13c00114ae371b2d9f728d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10eba0e8e9ae3fb3967be44322c66d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知在第一象限的
中,
求
边所在直线的点斜式方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92dc1bbf638a745303644d6baa915eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
【推荐1】已知两条直线
=0.
(1)求证:直线
过定点,并求出该定点的坐标;
(2)若a=0,直线l与
垂直,且______,求直线l的方程.
从以下三个条件中选择一个补充在____上面问题中,使满足条件的直线l有且仅有一条,并作答.条件①:直线l过坐标原点;条件②:坐标原点到直线l的距离为1;条件③:直线l与
交点的横坐标为2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd21514118130215289609be0aade42.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)若a=0,直线l与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
从以下三个条件中选择一个补充在____上面问题中,使满足条件的直线l有且仅有一条,并作答.条件①:直线l过坐标原点;条件②:坐标原点到直线l的距离为1;条件③:直线l与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐2】在平面直角坐标系中,已知
,线段
的中点
;
(1)求过
点和直线
平行的直线方程;
(2)求
边的高线所在直线方程;
(3)求
的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f1868311f37c72234f935f67fa4830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知圆
:
,点
,直线
过点
且倾斜角为
.
(1)判断点
与圆
的位置关系,并说明理由;
(2)若
,求直线
被圆
所戴得的弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd89a03660c85fb78bd7fe82ee3068c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6397893c31fc14f8d00a41b05b865de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f02fede76ba43141bafdb8e40963235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】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
解答题-问答题
|
较易
(0.85)
名校
【推荐1】已知点N(0,1),直线l:3x-4y=0,直线m过点N且与l垂直,直线m交圆x2+y2=4于两点A,B.
(1)求直线m的方程;
(2)求弦AB的长.
(1)求直线m的方程;
(2)求弦AB的长.
您最近一年使用:0次
【推荐2】(1)已知
顶点的坐标为
,
,
,求
外接圆的方程;
(2)求直线
被圆
截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397d7476fadbc4f22e4c7c4fd693a57f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89470068f2cfa4229e471c50065c63ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b818e1793be8d9213e903e5224987a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588c69b6098aad9ab2bfea8089d7377b.png)
您最近一年使用:0次