1 . 如图,在
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/ed24334a66354a63a60463dac39a1081.png)
中,
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/b4a7b3b6861c46869f79f118cf7059ee.png)
是的∠A的平分线,圆
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/b8b16a33cd0c474390e2e052d96a6d8e.png)
经过点
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/40f4b8bedd8747728b8c4e32b5771f55.png)
与
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/8037d20c16c54512a73bd42ed425f272.png)
切于点
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/2c56056d8eb14da691ce36b19d7f9e22.png)
,与
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/d3ca15ba591e4f33b1bd26cc520f4023.png)
相交于
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/fcbe3a7b28dc4ebca930b25972a40d4b.png)
,连结
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/2c2ca8e2cc0049adbcefbf10b44585b0.png)
,
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/6c725f6257264cac90a06ba0182fa89c.png)
.
(1)求证:
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/8613c0abdbac467683ad9b4b0ac14047.png)
; (2)求证:
![](https://img.xkw.com/dksih/QBM/2014/7/23/1571823395340288/1571823401328640/STEM/2ab60eb18ec54af6835810a283032015.png)
.
2016-12-03更新
|
183次组卷
|
3卷引用:2014届内蒙古呼伦贝尔市高三高考模拟二理科数学试卷(已下线)2014届内蒙古呼伦贝尔市高三高考模拟二理科数学试卷(已下线)2014届内蒙古呼伦贝尔市高三高考模拟二文科数学试卷(已下线)2014届内蒙古呼市二中高三模拟考试二理科数学试卷
2 . 如图,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
相切于点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
,直径
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf7d69c6087cad26571c8dc918d9e8e0.png)
,连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
交
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
于点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
.
![](https://img.xkw.com/dksih/QBM/2013/10/21/1571370609901568/1571370615341056/STEM/7f176de17a6745d5be024d7ea2181407.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2013/10/21/1571370609901568/1571370615341056/STEM/ce7dce0b800a43aea10c8be57ec7cee2.png)
;
(2)求证:
![](https://img.xkw.com/dksih/QBM/2013/10/21/1571370609901568/1571370615341056/STEM/9ce1b51e355e41189763f36dd434a7ed.png)
.
2016-12-02更新
|
494次组卷
|
2卷引用:2014届内蒙古赤峰市全市优质高中高三摸底考试理科数学试卷(已下线)2014届内蒙古赤峰市全市优质高中高三摸底考试理科数学试卷(已下线)2014届内蒙古赤峰市全市优质高中高三摸底考试文科数学试卷