11-12高一上·江苏·开学考试
1 . 如图,已知A、B两点的坐标分别为(-2,0)、(0,1),⊙C 的圆心坐标为(0,-1),半径为1.若D是⊙C上的一个动点,射线AD与y轴交于点E,则△ABE面积的最大值是__________ .
![](https://img.xkw.com/dksih/QBM/2011/10/21/1570328830238720/1570328835252224/STEM/d7219073204349ccb0defdcb6dc2e241.png?resizew=157)
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2 . 选修4—1:几何证明选讲
如图,
内接于圆
,
平分
交圆
于点
,过点
作圆
的切线交直线
于点
.
![](https://img.xkw.com/dksih/QBM/2015/4/15/1572073022324736/1572073028354048/STEM/8b152a1213744b2fa0813ae3d7523138.png)
(1)求证:
;
(2)求证:
.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2333da32638ec636fa1e69e750ca4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6062582a0a1679aa777451f25008411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2015/4/15/1572073022324736/1572073028354048/STEM/8b152a1213744b2fa0813ae3d7523138.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96db6ed42a67239083c6b36475147e3c.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5777d129b34192134305e1c61e60876.png)
您最近一年使用:0次