1 . 如图,某“京剧脸谱”的轮廓曲线C由曲线C1和C2围成.在平面直角坐标系xOy中,C1的参数方程为
(t为参数,且
).以坐标原点为极点,x轴正半轴为极轴建立极坐标系,C2的极坐标方程为
(
).
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953921118093312/2954543126118400/STEM/599d2a6f-ebfc-49e2-bd98-f5026cefd74f.png?resizew=142)
(1)求C1的普通方程和C2的直角坐标方程;
(2)已知
,
,OA⊥OB.当Rt△OAB的面积最大时,求点P到直线AB距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fd6bc2cc6f19f3f6eeccc62c3bfd9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7bf787cc8423e3e206b3a6cd2ba420.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266ab53d09de4ee05eb6bc616a0afb09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/278c6f21492d19ebee1a938560b91511.png)
![](https://img.xkw.com/dksih/QBM/2022/4/8/2953921118093312/2954543126118400/STEM/599d2a6f-ebfc-49e2-bd98-f5026cefd74f.png?resizew=142)
(1)求C1的普通方程和C2的直角坐标方程;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7414a224681fe7bd364cf8eda7a8c09c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc844ddd27d4a04fac665a84b055b50.png)
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6卷引用:1.5 平面上的距离(练习)-高二数学同步精品课堂(苏教版2019选择性必修第一册)
(已下线)1.5 平面上的距离(练习)-高二数学同步精品课堂(苏教版2019选择性必修第一册)贵州省普通高等学校招生2022届高三适应性测试数学(理)试题贵州省普通高等学校招生2022届高三适应性测试数学(文)试题(已下线)押全国卷(理科)第22题 坐标系与参数方程-备战2022年高考数学(理)临考题号押题(全国卷)黑龙江哈尔滨市第一二二中学2022届高三第三次模拟考试理科数学试题(已下线)安徽省江南十校2022届高三下学期3月一模理科数学试题变式题21-23
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2 . 在平面直角坐标系xOy中,直线l的参数方程为
(
为参数),以坐标原点O为极点,x轴正半轴为极轴,建立极坐标系,曲线C的极坐标方程为
.
(1)求直线l的普通方程和曲线C的直角坐标方程;
(2)直线l与曲线C交于A,B两点,设点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee88caee453e2268c7d10a99cd9997f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8c10c1e0e7d23a29d46da162e91668.png)
(1)求直线l的普通方程和曲线C的直角坐标方程;
(2)直线l与曲线C交于A,B两点,设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3979f27823cdcba516dfa885d8afe19d.png)
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3卷引用:河南省开封市杞县杞县高中2021-2022学年高二下学期5月月考数学文科试题
名校
3 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),以坐标原点O为极点,x轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.直线
的极坐标方程为
.
与
,
分别交于A,B两点(异于点
).
(1)求
的极坐标方程;
(2)已知点
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003711c299b13691aeb1e7c34747d9a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdebedd02b4ea57f8562443742086d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366d11e34429b1c54d82177a87300ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a0d4c22734cac795de1e5c5fbefa87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
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2022-03-30更新
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6卷引用:河南省开封市杞县杞县高中2021-2022学年高二下学期5月月考数学文科试题
名校
4 . 在平面直角坐标系中,曲线C的参数方程为
(
为参数),以原点O为极点,x轴的非负半轴为极轴建立极坐标系,直线l的极坐标方程为
.
(1)求曲线C的普通方程与直线l的直角坐标方程;
(2)设直线l与曲线C交于A,B两点,点P的坐标为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b2fd4f6bca2c467e2a7afa5acc8e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99fca72cdb82a500ed0964907afc62e8.png)
(1)求曲线C的普通方程与直线l的直角坐标方程;
(2)设直线l与曲线C交于A,B两点,点P的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7384b9afcef2d86a87eee0c66f383052.png)
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2022-03-21更新
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5卷引用:河南省信阳高级中学2021-2022学年高二下学期4月月考数学(理)试题
5 . 平面直角坐标系
中,曲线
的参数方程为
(
为参数),以坐标原点
为极点,
轴非负半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求曲线
的普通方程与曲线
的直角坐标方程;
(2)求曲线
上的动点到曲线
距离的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d83ad85a20506debf71fdc7705be03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbb6673d1fdeffaa8be277571802a2ad.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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2022-03-19更新
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5卷引用:四川省南充市阆中中学校2021-2022学年高二下学期第三次学习水平检测数学(理)试题
6 . 平面直角坐标系
中,以坐标原点
为极点,以
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
,直线
的参数方程为
(
为参数).
(1)写出曲线
的普通方程和直线
的极坐标方程;
(2)若直线
与曲线
交于
、
两点,点
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709a0481b31bb8a7011bc0a3fe4f34b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e1fcf47b611661ac78152ce9b88646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)写出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若直线
![](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/15ed90ebf0061c8a79beed307fc1719a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e007d5f2d0c7a5f1f0abaa6dfba27cee.png)
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2022-03-18更新
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3卷引用:江西省宜春市万载中学2021-2022学年高二下学期第一次月考数学(文)试题
名校
7 . 在直角坐标系xOy中,以坐标原点为极点,x轴正半轴为极轴建立极坐标系,曲线C的极坐标方程为
.
(1)求曲线C的直角坐标方程;
(2)求曲线C围成的图形的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95173799039693fd11ac80bb0ed54b4d.png)
(1)求曲线C的直角坐标方程;
(2)求曲线C围成的图形的面积.
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2022-03-10更新
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8卷引用:江西省宜春市上高二中2022届高三5月第十次月考数学(文)试题
名校
8 . 在平面直角坐标系中,当
不是原点时,定义
的“伴随点”为
,
是原点时,定义
的“伴随点”为它自身,平面曲线
上所有点的“伴随点”所构成的曲线
定义为曲线
的“伴随曲线”. 现有下列命题:
①若点A的“伴随点”是点
,则点
的“伴随点”是点A;
②单位圆的“伴随曲线”是它自身;
③若曲线
关于
轴对称,则其“伴随曲线”
关于
轴对称;
④一条直线的“伴随曲线”是一条直线.
其中的真命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11a48ad167bf671e74dae1b88e211c60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①若点A的“伴随点”是点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
②单位圆的“伴随曲线”是它自身;
③若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
④一条直线的“伴随曲线”是一条直线.
其中的真命题是( )
A.①②④ | B.②④ | C.②③ | D.③④ |
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9 . 在平面直角坐标系xOy中,曲线
的方程为
,点P为曲线
上任意一点,记线段OP的中点Q的轨迹为曲线
,以坐标原点O为极点,x轴正半轴为极轴建立极坐标系.
(1)求曲线
的极坐标方程;
(2)若点M,N分别是曲线
和
上的点,且
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f143ca890a2e92f28a942cbad62781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若点M,N分别是曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0b06dc01c30d13f64be2ac6a1d811e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94ef303a6e3c37e71d609cb7a95bfbc.png)
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2022-07-17更新
|
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4卷引用:陕西省汉中市校际联考2020-2021学年高二下学期期末理科数学试题
10 . 在直角坐标系
中,直线
的参数方程为
,以平面直角坐标系的原点为极点,
轴的非负半轴为极轴建立极坐标系,已知曲线
的极坐标方程是
.
(1)求曲线
的直角坐标方程;
(2)设
,
为直线
上2个不同的动点,且
,
为曲线
上的任意一点,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07da25154ea1422c42d7d2df3116c6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30d8e9a7538edfedcf51eed7e339363.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3d196cfee8345bd28a2f3814b676f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c28abb154f41e1ca9816c9c9c2433ca.png)
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