题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-17684.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-60022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-62978.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-63814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-30685.png)
(1)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
(2)求圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-63688.png)
解析
试题分析:(1)圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-60022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-65128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-30685.png)
(2)圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-30685.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-84960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-93320.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015335-16468.png)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015335-88244.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015335-32861.png)
所以直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015335-16468.png)
圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015335-80130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015336-19456.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015336-37803.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015336-71018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015336-11626.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015336-12412.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015337-11368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015337-65300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015337-52199.png)
圆
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015332-96985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015333-28157.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015334-63688.png)
核心考点
试题【已知在平面直角坐标系中,圆的方程为.以原点为极点,以轴正半轴为极轴,且与直角坐标系取相同的单位长度,建立极坐标系,直线的极坐标方程为.(1)求直线的直角坐标方程】;主要考察你对极坐标与直角坐标等知识点的理解。[详细]
举一反三
曲线C的参数方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015325-33789.png)
(1)已知在极坐标系(与直角坐标系xOy取相同的长度单位,且以原点O为极点,以x轴正半轴为极轴)中,点P的极坐标为
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015325-50202.png)
(2)设点Q是曲线C上的一个动点,求它到直线l的距离的最大值.
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015320-86556.png)
A.![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015315-69483.png)
(1)求动点P的轨迹的极坐标方程;
(2)将(1)中极坐标方程化为直角坐标方程,并指出轨迹是何种曲线.
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015307-28669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015307-10539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015307-45007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015307-70420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015307-45007.png)
(1)求点T的极坐标;
(2)过点T作直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015308-87616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015308-87616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015308-87616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108015302-55712.png)
(1)写出曲线C的直角坐标方程,并求M,N的极坐标;
(2)求直线OM的极坐标方程.
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