圆
为参数)上的点P到直线
为参数)的距离最小值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714dfd96844e89469c55cec66ac93245.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346b37852702b2dc3efc25d0b6cc081c.png)
更新时间:2019-05-27 12:30:30
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【知识点】 圆的参数方程
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【推荐1】直线
被曲线
(
为参数)截得的弦长为
,则实数
的值为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292fc234260672633fd445545a932553.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
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【推荐2】已知圆
的极坐标方程为
,则在平面直角坐标系中圆
的参数方程可以是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0cb878349009a779d94b1bc40319bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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