1 . 在平面直角坐标系中,直线
(
是参数)被圆
(
是参数)截得的弦长为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7208a200fa3818fa5ccc6b83e72d653b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2014/9/1/1571846938107904/1571846943891456/STEM/6daa406ec05a4609b581fa10fc16bda1.png?resizew=96)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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2 . 选修4-4:坐标系与参数方程
已知曲线
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, 若倾斜角为
的直线
经过点
.
(1)写出直线
的参数方程, 并将曲线
的极坐标方程化为直角坐标方程;
(2)若直线
与曲线
交于不同的两点
、
,求
的值.
已知曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03f07a3dc0e3632a7d2f32858f7003b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c3cd0f97c1b6006246d073e888280b.png)
(1)写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64f462ecd931af7043e4cf3f8758f45.png)
您最近一年使用:0次
2016-11-21更新
|
2196次组卷
|
2卷引用:2016届广东汕头市普通高考高三第二次模拟数学(文)试卷