如图,
为
的直径,点
在
上,连接
,
,过点
的切线
与
的延长线交于点
,
,
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/1a6cdc96-9ae9-4eeb-ad0b-86d68f612e9d.png?resizew=174)
(1)证明:
;
(2)当
的半径为
,
时,求
的长.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b8f24a7db96da84f6fdfd6cfd70616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/1a6cdc96-9ae9-4eeb-ad0b-86d68f612e9d.png?resizew=174)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92764cd7946e49fcc0210c1e3429ef61.png)
(2)当
![](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/9c8fda81ac52e35b6d7a85edf8fd743a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
更新时间:2022-06-01 05:51:57
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,以
的直角边
为直径作⊙
,交斜边
于点D,过圆心O作
,交
于点E,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/28bc69ba-a8af-4b97-ae45-3ca4b4405b15.png?resizew=201)
(1)判断
与⊙
的位置关系,并说明理由;
(2)若
,求⊙
的半径长.
(3)求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8f88798ec42a58dccd212586382b23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888f3f66a185ab290254e17c251d63ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/27/28bc69ba-a8af-4b97-ae45-3ca4b4405b15.png?resizew=201)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f413015814e33d1699cadd54a178e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381dce70e07452f6fda275abae2a943e.png)
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【推荐2】如图,在菱形
中,对角线
交于点
交
的延长线于点E,
交
的延长线于点
.
是矩形;
(2)
为
中点,连接
,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26856d8cedcaeeb39478157739b5cce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1089f40864a8ec79bf544ab7ff1cc43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab828df52237d3abd6831c694a197c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4cd68cc82e90a5e2049a7ea3171b84.png)
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名校
【推荐1】如图,过
外一点
作
的切线,切点为点
,
为
的直径,点
为
上一点,且
,连接
,
,线段
交直径
于点
,交
于点
,连接
.
;
(2)若
,
,求
半径的长.
![](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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab0389bef7fea9fd2429966ef6bf2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.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/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f586a2079d0e382ef843f4dbe068566e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de08e9e977f8997b0a7d351bf338c1fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ae29d32128443dd4f8ba3c7aa63c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
真题
【推荐2】如图,⊙
的直径
是
,过
点的直线
是⊙
的切线,
、
是⊙
上的两点,连接
、
、
和
.
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/053b9cda8d4e4b37b1877ec61e754b4e.png)
(1)求证:
;
(2)若
是
的平分线,且
,求
的长.
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/4702b5732a3443efb0ec9ea561a2671d.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/54dab7455a2544ae9c6c6fb89262b4ab.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/674941f2040441de9c0bb52f34a3c866.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/360f492606b5421a90fdff84fae44635.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/be8293e56f324e5faeb4e7b19e4e22a7.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/4702b5732a3443efb0ec9ea561a2671d.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/b92583332eb645a7b18e7baefc1440ad.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/99b9f622a3ae440cb82e465031384135.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/4702b5732a3443efb0ec9ea561a2671d.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/16c66afb9c2c410482fd4c0a50958151.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/d11e07416a814def89519bc3f8764319.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/605eb2152d0e4aa2b5e225557433a5c4.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/66900977cf5d4a068dcd1b39040521e0.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/053b9cda8d4e4b37b1877ec61e754b4e.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/13932bf1736142a59c908b0006f81176.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/bdf949b846df427689e5534fa0cda01f.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/08d61dfef8c24ee09cd1b971370d4af9.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/777c6ae8bc0e478d9948bf7d739f7e07.png)
![](https://img.xkw.com/dksih/QBM/2012/9/14/1573518829412352/1573518934908928/STEM/bdf949b846df427689e5534fa0cda01f.png)
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解答题-证明题
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适中
(0.65)
【推荐1】如图,四边形ABCD的外接圆为⊙O,AD是⊙O的直径,过点B作⊙O的切线,交DA的延长线于点E,连接BD,且∠E=∠DBC.
(1)求证:DB平分∠ADC;
(2)若CD=9,tan∠ABE=
,求⊙O的半径.
(1)求证:DB平分∠ADC;
(2)若CD=9,tan∠ABE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
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真题
名校
【推荐2】四边形
内接于
是
的直径,
.
(1)如图1,求证
;
(2)过点D作
的切线,交
延长线于点P(如图2).
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24891657669e67b63ee57ed2d520389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/864e3485-c1df-4024-bca6-719726ca12f6.png?resizew=345)
(1)如图1,求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0d050fca91c3bed6a2ad6907e6d1f0.png)
(2)过点D作
![](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/470d3636df4de536086c3a2aba140338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
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真题
解题方法
【推荐1】如图1,在△ABC中,∠A=30°,点P从点A出发以2cm/s的速度沿折线A﹣C﹣B运动,点Q从点A出发以a(cm/s)的速度沿AB运动,P,Q两点同时出发,当某一点运动到点B时,两点同时停止运动.设运动时间为x(s),△APQ的面积为y(cm2),y关于x的函数图象由C1,C2两段组成,如图2所示.
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773760347963392/1773760348291072/STEM/ca57b54c1ea7461894cb0424242f9e0b.png)
(1)求a的值;
(2)求图2中图象C2段的函数表达式;
(3)当点P运动到线段BC上某一段时△APQ的面积,大于当点P在线段AC上任意一点时△APQ的面积,求x的取值范围.
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773760347963392/1773760348291072/STEM/ca57b54c1ea7461894cb0424242f9e0b.png)
(1)求a的值;
(2)求图2中图象C2段的函数表达式;
(3)当点P运动到线段BC上某一段时△APQ的面积,大于当点P在线段AC上任意一点时△APQ的面积,求x的取值范围.
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解答题-应用题
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【推荐2】山西晋城景德桥,又名沁阳桥、西关大桥,是山西晋城市城区通往阳城、沁水的交通要道,是继赵州桥之后我国现存历史悠久的古代珍贵桥梁之一,其主拱的结构近似为圆弧形,某校“综合与实践”小组的同学为测量景德桥的主拱所在圆的半径,撰写了如下不完整的实践报告:
测量对象 | 景德桥的主拱所在圆的半径 |
成员 | 组长:×××.组员:×××,×××,××× |
测量工具 | 测量角度的仪器,皮尺等 |
测量方案 | 将主桥拱记为![]() ![]() ![]() ![]() ![]() |
测量示意图 | |
测量数据 | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
反思 | …… |
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