已知圆C与x轴相切,圆心C在直线
上,且与
轴正半轴相交所得弦长为
.
(1)求圆C的方程;
(2)过点
的直线
交圆于C,于E,F两点,且
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
(1)求圆C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dba41bb034d5ac43db507c73d25a62c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
更新时间:2022-11-15 10:59:45
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【推荐1】已知圆
经过原点且与
轴相切,与
轴正半轴交于点
.
(1)求圆
的方程;
(2)判断点
与圆
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(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7f6a03826a5ad351c1f7ca553a6945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7f6a03826a5ad351c1f7ca553a6945.png)
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【推荐2】已知圆
的半径为2,且圆心C在第二象限.
(1)求a的值;
(2)若直线
与圆C交于A,B点,且圆C上存在点P,使得
,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ee004c29f108716d3cac576a3b2063.png)
(1)求a的值;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0316dca18532c4533250ac7f62d468f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6901e8b018a80e917540462d2f3aadd.png)
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【推荐1】已知直线
,圆
,请判断直线
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被圆
所截的线段长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f846e5eec755d8daec031370b80456f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00f9ffb239658ef8990dcedaf72dd4d.png)
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐2】(1)求直线
被圆
截得的弦长.
(2)求过原点且与圆
相切的直线的方程;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b818e1793be8d9213e903e5224987a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588c69b6098aad9ab2bfea8089d7377b.png)
(2)求过原点且与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79d792674597a06e96c8a748654e80d.png)
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【推荐1】已知直线
经过两条直线
和
的交点,且与直线
垂直.
(1)求直线
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(2)若圆
的圆心为点
,直线
被该圆所截得的弦长为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e48755459575c9959349d8811fd55d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐2】已知圆
过点
,
,
.
(1)求圆
的方程;
(2)设直线
经过点
,且与圆
相交于
,
两点,且
,求直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a84757fa1fc2e9bf6134c12dce7fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb645218ed8779dba3055373f299b766.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
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【推荐3】在平面直角坐标系
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的极坐标方程为
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(1)求
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的直角坐标方程;
(2)若
与
交于相异两点A,B,且
,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcd836f0076cf49d2f627dc0e18c59e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dd2c9aa4de50a0f705689ea47beaf8c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb6573126516181bee81e64513ec1da.png)
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