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1 . 在平面直角坐标系xOy中,曲线
的参数方程为
(t为参数),点
.以O为极点,x轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
,射线l的极坐标方程为
.
(1)写出曲线
的极坐标方程;
(2)若l与
,
分别交于A,B(异于原点)两点,求△PAB的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a943b76240de530dbbedd1e3d871001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af74113f38fffeed8075e57d7f9d2533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b80024f36b7b8604522ba11a6ca129.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44670943f3d1ba89787b7cd2060d87ac.png)
(1)写出曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若l与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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2023-05-06更新
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1331次组卷
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8卷引用:贵州省铜仁市2023届高三适应性考试(二)数学(理)试题