名校
1 . 已知圆
的极坐标方程是
,以极点为平面直角坐标系的原点,极轴为
轴的正半轴,建立平面直角坐标系,则直线
的参数方程为
(
为参数).若直线
与圆
相交于
,
两点,且
.
(1)求圆
的直角坐标方程,并求出圆心坐标和半径;
(2)求实数
的值.
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c0b5106ec2ed4380af05781c0cbb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baebce5e4328aa5d681757b3f945f919.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-07-14更新
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2卷引用:黑龙江省哈尔滨市第九中学2020届高三第三次模拟考试数学(文科)试题
名校
2 . 极坐标方程
表示的图形的面积是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce27d8b2b46ae75be8ac2eecc242573.png)
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2019-12-16更新
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2卷引用:甘肃省兰州市等4地2022届高三一模文科数学试题
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3 . 在极坐标系中,圆
的圆心到极轴的距离为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdebedd02b4ea57f8562443742086d3.png)
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2019-12-08更新
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2010·广东·一模
4 . (坐标系与参数方程选做题)极坐标系中,曲线
和
相交于点
,则
=_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9514468ce4ea82166ffd713a4b0743c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f11b5220813e96b65c9af4b5de0f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
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