1 . 选修4—1:几何证明选讲
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2333da32638ec636fa1e69e750ca4a.png)
内接于圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6062582a0a1679aa777451f25008411d.png)
交圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
于点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
作圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
的切线交直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
于点
![](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)
.
2016-12-03更新
|
635次组卷
|
1卷引用:2015届辽宁省朝阳市三校协作体高三下学期开学联考理科数学试卷
2 . 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
__________.
2016-12-01更新
|
676次组卷
|
1卷引用:2012年江苏省某重点中学高一上学期开学考试数学(已下线)2012年江苏省某重点中学高一上学期开学考试数学