如图,在
中,
,
是
上的一点,以
为直径的
与
相切于点
,连接
.
(1)求证:
平分
;
(2)若
,求
的值;
(3)在(2)的条件下,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddf629bfb2d7b9daea6f2c1553360af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e88d8672e8521e27058252f51000281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/23/8f944310-faac-4181-879e-8e052a5e6fe8.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d3c9ce32b721995f355eea411340e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0cdbbcd3b4fbd05cf6053ee61eca798.png)
(3)在(2)的条件下,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5490dba7da9a3f60c2f9440b2ddd0162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
2023·湖南株洲·一模 查看更多[3]
更新时间:2023-05-11 17:13:39
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在⊙O中,AB为直径,CD与⊙O相切于点D,连接AC交⊙O于点E,交OD于点G,连接CB并延长交⊙O于点F,∠ACD=∠F,连接AD,BF,且AD
BC.
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930224769024000/2938182481870848/STEM/6534472f0dac4b7186a9df1cd544d200.png?resizew=208)
(1)求证:四边形ABCD是平行四边形.
(2)若⊙O的半径为6,且tan∠ACF=
,连接DE,求DE的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://img.xkw.com/dksih/QBM/2022/3/6/2930224769024000/2938182481870848/STEM/6534472f0dac4b7186a9df1cd544d200.png?resizew=208)
(1)求证:四边形ABCD是平行四边形.
(2)若⊙O的半径为6,且tan∠ACF=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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,
是
的直径,C为
上一点,D在
上,且
,
的延长线与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/6134e6bc-37cb-435c-90e3-de3564cc19c1.png?resizew=183)
(1)求证:
;
(2)若
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a13c67f6211cb9aaa665822ce24c5a.png)
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feeca084852e9763f2d57710091ad0a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/6134e6bc-37cb-435c-90e3-de3564cc19c1.png?resizew=183)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098948e9457fb62e51d14dd5ab1996b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d527d4795ece4a5756d1cf8dba31e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a13c67f6211cb9aaa665822ce24c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1da12b51149bf0b494d8124e20489e.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在△ABC中,AB=AC,以AB为直径的⊙O与BC交于点D,过点D作⊙O的切线与AC交于点F.
(1)求证:EF=CF;
(2)若AE=8,cosA=
,求DF的长.
(1)求证:EF=CF;
(2)若AE=8,cosA=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://img.xkw.com/dksih/QBM/2018/5/4/1938008432721920/1938113112899584/STEM/c4af2ab711094208a9e51991280bfc0f.png?resizew=132)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图,
是
的直径,
是
的切线,
交
于另一点
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03792cfb2b3540e9f8992d6daa36700d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/82f1626f-87cb-41a5-b7e2-266af2f697ed.png?resizew=196)
(1)求证:
;
(2)若
为
的中点,
,连接
,求
的长及阴影部分的面积.
![](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/9b1ec05e3cec27677ded7b4aecaa62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bf58e5fea1189b33cf55d86335452f.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/03792cfb2b3540e9f8992d6daa36700d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/28/82f1626f-87cb-41a5-b7e2-266af2f697ed.png?resizew=196)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02bcc1b9b8eec9d79f0d507b968d9ade.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】图①、图②、图③均是6×6的正方形网格,每个小正方形的顶点称为格点,且
的顶点均在格点上.在图①、图②、图③给定的网格中,只用无刻度的直尺,按要求画图,保留作图痕迹,不要求写出画法.
边上取一点D,连接
,使
平分
.
(2)在
边上取一点E,连接
,使
.
(3)在
边上取一点F,连接
,使
.
![](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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65ce7dba0708f44ace65ccfb283144a3.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb857c5b581b511deacb1bc93534bbad.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,某地四个乡镇建有公路,已知AB=14千米,AD=28千米,BD=21千米,BC=42千米,DC=31.5千米,公路AB与DC平行吗?说出你的理由.
![](https://img.xkw.com/dksih/QBM/2020/9/9/2545824241287168/2545946001973248/STEM/13194d90-4e80-43db-bef2-c1df35175d1a.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在
中,
,点D是
的中点,以
为直径作
,与
交于点E,过点E作
的切线
,交
于点F.
(1)求证:
;
(2)若
的半径是
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/80d74d8a-abd2-4d45-a87b-1751d357ff0d.png?resizew=210)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5d3b215f71b490fa51131793f1402a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a679040c4d556723e482bacbab41356d.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,
是以C为顶点的等腰三角形,以
为直径作
,交
于点D.延长
至点E,使得
,连接
.
是
的切线;
(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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc7897e3f49075943704f4dbef82e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9739a05e2cfc633dabb2e07e445725dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次