已知圆心在直线
上的圆C经过
点,且与直线
相切.
(1)求过点P且被圆C截得的弦长等于4的直线方程;
(2)过点P作两条相异的直线分别与圆C交于A,B,若直线PA,PB的倾斜角互补,试判断直线AB与OP的位置关系(O为坐标原点),并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c204834608f1a8fba15747210dd7c5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2007972af3341f27fbc32ce62dfce5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcaada7649455fbebcdbdbb9a94e6a1.png)
(1)求过点P且被圆C截得的弦长等于4的直线方程;
(2)过点P作两条相异的直线分别与圆C交于A,B,若直线PA,PB的倾斜角互补,试判断直线AB与OP的位置关系(O为坐标原点),并证明.
更新时间:2020-03-02 17:28:10
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解题方法
【推荐1】圆
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(2)已知直线l:
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(3)过点
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【推荐2】已知圆
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作圆
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,
,切点分别是
和
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(1)试问直线
是否恒过定点,若是求出这个定点,若否说明理由;
(2)直线
与圆
交于
,
两点,求
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(1)试问直线
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(2)直线
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解题方法
【推荐1】在直角坐标系
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
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