1 . 已知圆
的极坐标方程为
,直线l的参数方程为
(
为参数).
(1)把圆C的极坐标方程化为直角坐标方程;
(2)求直线l被圆
截得的线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c05cf382bac1536c74666819e4da1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2541bd9675ff3ef6723b06d084316c9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)把圆C的极坐标方程化为直角坐标方程;
(2)求直线l被圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2020-07-01更新
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2卷引用:广西北流市实验中学2019-2020学年高二下学期期中考试数学(文)试题