如图,在
中,
,点D是AB的中点,以CD为直径的⊙O分别交AC,BC于点M,N,点E在AB上,NE为⊙O的切线.
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600513944993792/2602065610653696/STEM/7dfc1ccf1b6e46b09f81e3deb3a22933.png?resizew=190)
(1)求证:
;
(2)若⊙O的半径为5,
,求BN的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/2020/11/25/2600513944993792/2602065610653696/STEM/7dfc1ccf1b6e46b09f81e3deb3a22933.png?resizew=190)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc936d478f47c519ce4aea86dd1e942.png)
(2)若⊙O的半径为5,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0763b031b7e6b6d87ce3554ac482d5.png)
更新时间:2020-11-27 17:38:56
|
相似题推荐
解答题-证明题
|
较易
(0.85)
【推荐1】如图,已知
是锐角
的外接圆,
,
是
的直径,
是
边上的高,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/20307943-814e-4380-ac84-e4f528377fbc.jpg?resizew=111)
(1)求证:
.
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3570a95f68349fcd9417fcda62e78e7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/20307943-814e-4380-ac84-e4f528377fbc.jpg?resizew=111)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf750c6dfbdc5f6d40774e0d347e2deb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171fa1dca48260d03d56bee6374aa751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e47710f547143221417662ba8891daa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐1】已知AB是⊙O的直径,AP是⊙O的切线,A是切点,BP与⊙O交于点C.
(2)如图②,若D为AP的中点,求证:直线CD是⊙O的切线.
(2)如图②,若D为AP的中点,求证:直线CD是⊙O的切线.
您最近一年使用:0次
解答题-证明题
|
较易
(0.85)
【推荐2】如图,
是
的直径,点
在射线
上,
与
相切于点
,过点
作
,交
的延长线于点
,连接
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/dfeaf4c3-eeb8-49d2-becf-533e10edac32.png?resizew=164)
(1)求证:
是
的平分线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.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/2c38bbe49284a2ceab26001ced8cfd56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/dfeaf4c3-eeb8-49d2-becf-533e10edac32.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead1eda1ca5b67586379a09a4c3540b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef9a26f10ec80be707dd4c282be9c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次