已知△ABC中,顶点A(2,1),B(-2,0),∠C的平分线所在直线的方程为x+y=0.
(1)求线段AB所在的直线方程;
(2)求顶点C的坐标.
(1)求线段AB所在的直线方程;
(2)求顶点C的坐标.
21-22高二上·福建福州·期中 查看更多[2]
更新时间:2021-12-01 13:22:30
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【推荐1】已知直线
,直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05317dc974a2029540cea23df5c1b775.png)
(1)求直线
与直线
的交点
的坐标;
(2)过点
的直线与
轴的非负半轴交于点
,与
轴交于点
,且
(
为坐标原点),求直线
的斜率
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da5604e5d0faed7fdd910bc139bcac31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05317dc974a2029540cea23df5c1b775.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6046bd4bf51a69b21ec583b6021ea545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】如图,直角三角形
的顶点坐标
,直角顶点
,顶点
在
轴上,点
为线段
的中点.
(1)求
边所在直线方程;
(2)
为直角三角形
外接圆的圆心,求圆
的方程;
(3)直线
过点
且倾斜角为
,求该直线被圆
截得的弦长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)直线
![](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/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2011/2/25/1570012972883968/1570012978085888/STEM/248f784417e444ee98419055d931ca72.png?resizew=199)
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【推荐1】已知直线L过坐标原点,抛物线C的顶点在原点,焦点在x轴正半轴上,若点A(-1,0)和点B(0,8)关于L的对称点都在C上,求直线L和抛物线C的方程.
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【推荐2】城市发展,拼“内涵”也要拼“颜值”,近年来,多地持续推进城市绿化,以城市绿化增量提质,擦亮城市生态底色,街头随处可见的“口袋公园”已规划完善,一幅“推窗见绿、出门即景”的美丽画卷正徐徐展开.某市规划四边形空地OABC建设“口袋公园”,已知三角形区域OAC与ABC关于中心道路AC对称,在AC的中点P处规划建一公共厕所.测得
且
,点C到OA的距离为20米,
米.设计人员方便规划计算,在图纸上以O为坐标原点,以直线OA为x轴建立如图所示平面直角坐标系xOy.
(1)求点P到OC的距离;
(2)求出BC所在直线方程及该口袋公园的总面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f435c3556b48f0eccc958240fc6c7d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573e1c0d7cedbd7581b8401d64fdba44.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/29/b538c4a4-4ab5-41d9-af0a-3bc950c11642.png?resizew=161)
(1)求点P到OC的距离;
(2)求出BC所在直线方程及该口袋公园的总面积.
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