名校
1 . 在直角坐标系
中,以坐标原点为极点,x轴非负半轴为极轴建立极坐标系,曲线C的极坐标方程为
,其中
为参数.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/19/551a520a-4a56-4bc9-a4ad-acd5e94aa6aa.png?resizew=150)
(1)求曲线C的直角坐标方程,并画出曲线C的简图(无需写出作图过程);
(2)直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf4ec21e5682d3f0c3bd3485a1bbf4e.png)
与曲线C相交于A,B两点,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd0ca66a1e11ad8008e8f6c8a18ba15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/19/551a520a-4a56-4bc9-a4ad-acd5e94aa6aa.png?resizew=150)
(1)求曲线C的直角坐标方程,并画出曲线C的简图(无需写出作图过程);
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf4ec21e5682d3f0c3bd3485a1bbf4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b153c717bf297548ac393b1e9448dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631586067d81160678c2ddea983e62de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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