2011·广东深圳·二模
1 . 在平面直角坐标系xOy中,曲线C的参数方程为
(
为参数,
).若以O为极点,以x轴正半轴为极轴建立极坐标系,则曲线C的极坐标方程为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1dd31a086412c798146d11008253d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749eec847aa4a0a6e6f0ab490a9ca456.png)
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2011·广东深圳·一模
2 . (二)选做题:第14、15题为选做题,考生只能选做一题,
两题全答的,只计前一题的得分
(坐标系与参数方程)在极坐标系中,设
是直线
上任一点,
是圆
上任一点,则
的最小值是_____________ .
(几何证明选讲)如图,割线PBC经过圆心O,PB=OB=1,PB绕点O逆时针旋120°到OD,连PD交圆O于点E,则PE=
两题全答的,只计前一题的得分
(坐标系与参数方程)在极坐标系中,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396f3af387ea858e0efb2660aaa061a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357d46655e4591e5f68ad8595af0ad06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
(几何证明选讲)如图,割线PBC经过圆心O,PB=OB=1,PB绕点O逆时针旋120°到OD,连PD交圆O于点E,则PE=
![](https://img.xkw.com/dksih/QBM/2011/3/8/1570029448364032/1570029453672448/STEM/b9a60d179a1a454cab6ebcbd67844308.png?resizew=164)
您最近一年使用:0次