如图,
是
的直径,
是半圆上的一点,
与
所在的直线互相垂直,
于点
,交
于点
.
![](https://img.xkw.com/dksih/QBM/2022/12/5/3124212974313472/3170373045051392/STEM/749d4fb255f14679a4828ab3c72c7544.png?resizew=136)
(1)求证:
平分
;
(2)若点
为弧
的中点,
的半径为
,求图中阴影部分的面积.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2022/12/5/3124212974313472/3170373045051392/STEM/749d4fb255f14679a4828ab3c72c7544.png?resizew=136)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
更新时间:2023-02-08 16:03:23
|
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解答题-证明题
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适中
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【推荐1】如图,
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在
中,
,
是
上一点,以
为半径的
与
相切,切点为
,连接
,
与
相交于点
.
是
的角平分线;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7cbfaec1d9dcaaf159b060163436113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d71e6ea7333dbc78d0a7b9bc3892f940.png)
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解答题-问答题
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适中
(0.65)
【推荐2】如图,正方形ABCD的边长为4,直线AF与以BC为直径的半圆相切于F,交CD于E,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://img.xkw.com/dksih/QBM/2020/8/29/2538334040981504/2538412827369474/STEM/52a908b56c784ba6b5353f21a596498f.png?resizew=119)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,AB是
的弦,AC经过圆心O交
于点D,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/d656d721-4ab6-413b-a5b8-a6c5afd8d4a2.png?resizew=179)
(1)求证:BC是
的切线;
(2)设
的半径为2,求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5ca4861b3897636edb60fba305831b1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/d656d721-4ab6-413b-a5b8-a6c5afd8d4a2.png?resizew=179)
(1)求证:BC是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】如图,PA是
的切线,切点为A,AC是
的直径,连接OP交
于D.过点C作
,连接AB交OP于点E.
![](https://img.xkw.com/dksih/QBM/2021/11/12/2849921067040768/2853073634705408/STEM/5920d8e1-b604-4816-bf3e-60f4eecd321f.png)
(1)求证:PB是
的切线;
(2)若E恰好是OD的中点,且四边形OAPB的面积是
,求阴影部分的面积;
(3)若
且
,求AB的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed5d810260e43506e8727bc4f59e1d6.png)
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(1)求证:PB是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若E恰好是OD的中点,且四边形OAPB的面积是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a554e03744b5befe9e0939377dafa8a.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20260c9f8315a66fbaaa04fa50366fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
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