1 . 在极坐标系下,方程
的图形为如图所示的“三叶玫瑰线”.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712254176993280/2716164909711360/STEM/66538500-034b-4de6-abd0-cf65acbb38da.png?resizew=235)
(1)当玫瑰线的
时,求以极点为圆心的单位圆与玫瑰线的交点的极坐标;
(2)求曲线
上的点
与玫瑰线上的点
距离的最小值及取得最小值时的点
、
的极坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6397b144a95ea6010fa31855186e5fd0.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712254176993280/2716164909711360/STEM/66538500-034b-4de6-abd0-cf65acbb38da.png?resizew=235)
(1)当玫瑰线的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38fec745f18e1c06ecd27a5f6b2577f.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450aa257372cd8155e56c70c35afbca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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2021-05-07更新
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2卷引用:新疆维吾尔自治区2021届高三年级第二次诊断性测试数学(理)试题(问卷)