如图,已知
是
的直径,点
在
上,延长
至点
,使得
;直线
与
的另一个交点为
,连结
,
.
(1)求证:
;
(2)若
,
,求阴影部分(弓形)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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f213621229843639780aae87fa29584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](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/4eedae8d316c76e3d0b451256de03fb9.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5b3967aa677f18e92912d2397f4907.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/12/6baebedc-1361-4e74-9c17-fd8256bfb8b1.png?resizew=189)
更新时间:2020-10-27 21:26:51
|
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解答题-证明题
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(0.85)
【推荐1】如图,在
中,
,点D为AB边上的一点且
,过点B作CD的平行线BE,且
于点E,连接DE.
(1)求证:BC平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfc2771aa0d5b97d2297f8a26a6f6b1.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
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您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,在
中,
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交
边于点
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(2)若
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解答题-问答题
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(0.85)
名校
【推荐1】如图,矩形
中
,
.作
于点
.若以点
为圆心作圆,
、
、
、
四点中至少有
个点在圆内,且至少有
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的半径
的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc11331a7b2d2619b40ee6d34c3bd620.png)
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解答题-问答题
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较易
(0.85)
【推荐2】如图.
的半径为
,
、
是
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,
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相切的圆,那么:
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有怎样的位置关系?为什么?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-证明题
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较易
(0.85)
【推荐1】将一个球放在圆柱形塑料管上,如右图是它的横截面,测得有关数据如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/1/947d83da-9a8c-48fe-a350-cd55022961ea.png?resizew=156)
(1)求该球的半径;
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(1)求该球的半径;
(2)求阴影部分的面积.
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解答题-作图题
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【推荐2】半径为1的圆中,扇形
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