如图所示, 已知⊙
和⊙
相交于
两点,过点
作⊙
的切线交⊙
于点
,过点
作两圆的割线,分别交⊙
、⊙
于点
,
与
相交于点
.
(Ⅰ)求证:
;
(Ⅱ)若
是⊙
的切线,且
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bdc75c9a9fba398e737d4832101f60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0269e56834bd59d8e47b177aef447d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24398a4072971f71f273bf34737da15.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b2e4d424dd04c5ed52385c0181e441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
更新时间:2016-12-04 06:45:06
|
【知识点】 几何证明选讲
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】在直角坐标系
中,点
到两点
、
的距离之和等于4,设点
的轨迹为曲线
,直线
与曲线
交于
、
两点.
(1)求出
的方程;
(2)若
=1,求
的面积
(3)若OA⊥OB,求实数
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1439ae355f4f6830dc3456381e5ef654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d23f82955c5317803eb2f7fb59c19a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/998e9908f0ffed5c312c6484955dd1c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
(3)若OA⊥OB,求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.64)
【推荐2】选修4-1:几何证明选讲
如图,
和
相交于
两点,过
分别作两圆的切线分别交两圆于
两点,连结
并延长交
于点
,已知
.
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/ceb272afff0c48fab2cdb8ca28eba390.png?resizew=239)
(1)求
的值;
(2)求线段
的长.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/4121a58d5d484a23bc55c3a3c06470e1.png?resizew=31)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/f4bd793bf34a4c38ab87c688638dfa19.png?resizew=43)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/0901055475704ff7921fb94e664b11f2.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/d77cd599525f4b8a859ed46c61b986ff.png?resizew=89)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/ceb272afff0c48fab2cdb8ca28eba390.png?resizew=239)
(1)求
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/a0d0807c635748c98d5489cd0691575b.png?resizew=57)
(2)求线段
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572931324067840/1572931330572288/STEM/43caec45484143d5aeec2abe52f77c94.png?resizew=27)
您最近一年使用:0次