如图,在
中,
,以
为直径的
分别与
、
交于点D、E,过点D作
,垂足为点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/d31acaaa-4d73-4af5-9601-b2767bc51f25.png?resizew=136)
(1)求证:直线
为
的切线;
(2)若
的半径为4,
,求阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761a77e11e1e45c2a8b2d34d22cf8e04.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/15/d31acaaa-4d73-4af5-9601-b2767bc51f25.png?resizew=136)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.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/a36c66f6822678771b9d3753d969ae81.png)
更新时间:2023-10-22 21:01:19
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
与
相切于点
,连接
并延长交
于点
,
是
上一点,且
,连接
,
与
交于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/78b12665-1745-447d-9dd2-aca269d34248.png?resizew=119)
(1)求证:
.
(2)若
,求劣弧
的长.
(3)求证:
是
的切线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/4ce7c94ea0a01fc2047423dee5363144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eb0c11e4b7aa9030a6691aee35eed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/78b12665-1745-447d-9dd2-aca269d34248.png?resizew=119)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633521f6526c4141ce7f6086d5d7a2bd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b42bf9a8973e03fa1b242b85a06efa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,
是
的直径,点C在
上,且
,
,
的延长线交于点G,
交于
于点F,垂足为D.
(1)求证![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea2b4362b4260e1afc09b291fe10bd1.png)
(2)求证
.
![](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/473f08ae1b29846e2197443a3978e2d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971b23e3ee827018557d6c88edd5369a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07b1a11cfc34144d6236a48b00dbb5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/890bdaa4-f3df-48ca-80ae-8f720942161e.png?resizew=216)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea2b4362b4260e1afc09b291fe10bd1.png)
(2)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3a76408d18fa43518aa516f190e4d2.png)
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(0.65)
名校
【推荐1】如图1,以
的直角边
为直径作
,交斜边
于点D,点E是
的中点,连接
,
.
是
的切线;
(2)【拓展】如图2,点F在
的延长线上,点M在线段
上,
于点N,
交
于点G.求证:
;
(3)【运用】在(2)的条件下,若
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)【拓展】如图2,点F在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861f91973cf3faa54cc04f9325203afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/978fc5cb6c1ef7c444c048e5e8bb82c5.png)
(3)【运用】在(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/addb8e20db1fbb40f17dea52f951b907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faffe3765c15f53305516895aa595a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4b0c4b339f44bbac0e275eb0718234.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】如图,
为
上一点,点
在直径
的延长线上,且
.
(1)求证:
是
的切线;
(2)过点
作
的切线交
的延长线于点
,若
,
,求
的长.
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37eb7f363ef89c743b86dfbf51231ce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/6524f420-4bdc-4369-914b-d3df68377b77.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5ead7fa637e83a2d75452152c05d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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真题
名校
【推荐1】一次函数
的图像与x轴的负半轴相交于点A,与y轴的正半轴相交于点B,且
△OAB的外接圆的圆心M的横坐标为-3.
(1)求一次函数的解析式;
(2)求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747db233cce184b0bb219d6fe381fafc.png)
(1)求一次函数的解析式;
(2)求图中阴影部分的面积.
![](https://img.xkw.com/dksih/QBM/2019/6/18/2228262277554176/2229853309583360/STEM/4269e4fe264b412cb392bb885ceb7c53.png?resizew=183)
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解答题-证明题
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适中
(0.65)
【推荐2】如图,AB为⊙O的直径,弦CD⊥AB,垂足为F,CG⊥AE,交弦AE的延长线于点G,且CG=CF.
(1)求证:CG是⊙O的切线;
(2)若AE=2,EG=1,求由弦BC和
所围成的弓形的面积.
(1)求证:CG是⊙O的切线;
(2)若AE=2,EG=1,求由弦BC和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://img.xkw.com/dksih/QBM/2020/3/7/2414556234219520/2415339483021312/STEM/8c2f1076db0c48b8977210069ff4aa36.png?resizew=139)
您最近一年使用:0次
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适中
(0.65)
名校
【推荐1】如图,
内接于
,
平分
交
于
,过点
作
分别交
、
延长线于
、
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/58add131-77b0-4d02-8e85-0cfd1228beea.png?resizew=120)
(1)求证:
是
的切线;
(2)求证:
;
(3)若
、
的长是关于
的方程
的两实根,且
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259a6725a9231c13ee8775d84ea397ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/58add131-77b0-4d02-8e85-0cfd1228beea.png?resizew=120)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8d5c5d6cc5131c6cc750ad993435adf.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4425d7409151b604eb357e12dfa826.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d8e7c3d1dd95a5b7f6c2ef4c07f408.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】如图,在菱形
中,
,
,在直线
上有一点M,
,
,以
为直径的半圆O与直线
相切于点P,点N为半圆弧
上一动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/067220fc-53bb-45dc-b6a5-d9766268acb2.png?resizew=290)
(1)当点P与点M重合时,H为半圆O上一点,则线段
的最小值为______;
(2)半圆O从点M出发沿
做平移运动,速度为每秒1个单位长度,同时点N从点P开始绕圆心顺时针旋转,速度为每秒
,设运动时间为t秒
,解决下列问题:
①当
时,求此时点O到
的距离及扇形
的面积;
②当半圆O与菱形
有交点时,直接写出运动时间t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284a563413dc0532138fb2a64db8cc2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b46c65edb18abf04d813da78b9e0313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42a8ba3ea434605e0574339efc9c38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/18/067220fc-53bb-45dc-b6a5-d9766268acb2.png?resizew=290)
(1)当点P与点M重合时,H为半圆O上一点,则线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
(2)半圆O从点M出发沿
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c12e76fbd84eeec721386bd3b04cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683cf8de94d118b12cdc337d83b30813.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f11db05569a88a3da8d4b635d0ff94.png)
②当半圆O与菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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