如图,
分别切
于
,且
,连接
,延长
交
于点M,过点M作
交
于N.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/aab71106-9061-43bd-b077-3f61e76a0dcb.png?resizew=235)
(1)求证:
是
的切线;
(2)当
,
时,求
半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b23fc110b93d0ba75d461cb46a6ed1ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241f9ef86cd0a902cbadaf336767dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cdd1cafc1898d9a5e960b7aef0ade5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a122e25cf4eb9f03ffe5ec823bfc31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521b3fb30603fe8865e32595630ed674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/7/aab71106-9061-43bd-b077-3f61e76a0dcb.png?resizew=235)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce509254f8c4eb611995f5617e7025a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e54ce8de98236a2d8246a65c53ef3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
更新时间:2023-02-05 14:26:58
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,∠PAQ是直角,半径为5的圆O经过AP上的点T,与AQ相交于点B,C两点,且TB平分∠OBA.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2968152255193088/2969219297820672/STEM/87caa76e-8da9-4ad8-9ca3-d024e27e56a9.png?resizew=159)
(1)求证:AP是⊙O的切线;
(2)已知AT=4,试求BC的长.
![](https://img.xkw.com/dksih/QBM/2022/4/28/2968152255193088/2969219297820672/STEM/87caa76e-8da9-4ad8-9ca3-d024e27e56a9.png?resizew=159)
(1)求证:AP是⊙O的切线;
(2)已知AT=4,试求BC的长.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在Rt
中,
,以斜边
上的中线
为直径作
,与
交于点
,与
的另一个交点为
,过
作
,垂足为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/de2f21e8-9ded-4a2f-a127-d9e319b2ffb4.png?resizew=178)
(1)求证:
是
的切线;
(2)若
的直径为
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed8f7d3d7043d4b1eb98fc5c4e2fcd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f479d987bc7abd828c64f9dc745836ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/de2f21e8-9ded-4a2f-a127-d9e319b2ffb4.png?resizew=178)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33fef3a1cdbb118b44f128ee5fc61c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,在
中,
是斜边
上的高,
,分别是
的内心,直线
,分别交
于点E、F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/c9437194-e330-4e5b-8e99-00aae6d5d05e.png?resizew=202)
(1)求
;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcee0062b32b89d51778200492ae23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b53a5c4f33dd497911e9ffdb7ef85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b69d2dfdb8f5702f0f723921742ce4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96754604a4e00ef93392a776cec1d248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/c9437194-e330-4e5b-8e99-00aae6d5d05e.png?resizew=202)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3ba37b51892588420114b4a1983527.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,已知
内接于⊙O,
是⊙O的直径,点F在⊙O上,且点C是弧
的中点,过点C作⊙O的切线交
的延长线于D点,交
的延长线于E点.
![](https://img.xkw.com/dksih/QBM/2023/1/19/3156058357587968/3245890807742464/STEM/f817f85d31f740c386029fc182b90e61.png?resizew=179)
(1)求证:
;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://img.xkw.com/dksih/QBM/2023/1/19/3156058357587968/3245890807742464/STEM/f817f85d31f740c386029fc182b90e61.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5427b7b994b860628df3d6b7a07de8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691048ce61c91a8a3680fa3025193160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86338536656046e93b53672ade9a78b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次