如图,在
中,
,
于点
,
于点
,以
为圆心,
为半径作半圆,交
于点
.
(1)求证:
是
的切线;
(2)若点
是
的中点,
,求图中阴影部分的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4744b427f036dfbc6db68c87cd5c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4044740a4da919aeb477a2d8c217fd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a16f5621716bfef7a056a3f2712feb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f3be3806ce3b7b636535b64c8db3fe.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a064c99f1def2a6adb2fc26e8e5b0272.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/14/f5f40da3-ec34-4b03-8b79-5713a3410d03.png?resizew=188)
更新时间:2020-04-21 19:48:32
|
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在△ABC中,AB=BC,∠ABC=120°,AB的垂直平分线DE交AC于点D,连接BD,若AC=12
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/30baed76-4818-4af3-b546-aea321a36f20.png?resizew=199)
(1)求证:BD⊥BC.
(2)求DB的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/23/30baed76-4818-4af3-b546-aea321a36f20.png?resizew=199)
(1)求证:BD⊥BC.
(2)求DB的长.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,
是边长为
的等边三角形,动点P、Q同时从A、B两点出发,分别沿
、
方向匀速移动,它们的速度都是
,当点P到达B时,P、Q两点停止运动,设点P的运动时间为t(s),解答下列问题:
(1)当t为何值时,
是直角三角形;
(2)当t为何值时,
的长度是
;
(3)当t为何值时,
的面积是
的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5631e6ec24d3d67bf4592313b6b3f4f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/23/f50a6f11-dae2-41c4-9331-2382579889f3.png?resizew=153)
(1)当t为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
(2)当t为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7556dcd8954ec0494b78acfe479009c4.png)
(3)当t为何值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图,一次函数y=ax+b的图象与反比例函数y=
(x>0)的图象交于点P(m,4),与x轴交于点A(﹣3,0),与y轴交于点C,PB⊥x轴于点B,且AC=BC.
(1)求反比例函数与一次函数的解析式;
(2)反比例函数图象上是否存在点D,使四边形BCPD为菱形?如果存在,求出点D的坐标;如果不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
(1)求反比例函数与一次函数的解析式;
(2)反比例函数图象上是否存在点D,使四边形BCPD为菱形?如果存在,求出点D的坐标;如果不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/4731e3d2-375c-4215-ad73-c3bb2d952256.png?resizew=165)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
名校
【推荐2】作图:
![](https://img.xkw.com/dksih/QBM/2023/3/27/3203490375139328/3204239962660864/STEM/0534bb18acbd4572ae61040c73e9589d.png?resizew=209)
(1)直接写出
的长为 ;
(2)找到格点D,画出以点A、B、C、D为顶点且周长最小的平行四边形;
(3)画
的角平分线
;
(4)直接写出
的面积是 .
![](https://img.xkw.com/dksih/QBM/2023/3/27/3203490375139328/3204239962660864/STEM/0534bb18acbd4572ae61040c73e9589d.png?resizew=209)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)找到格点D,画出以点A、B、C、D为顶点且周长最小的平行四边形;
(3)画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
(4)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知在
中,
.
是
的弦,
交
于点
,且
为
的中点,延长
交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2020/7/10/2502987699486720/2503093038432256/STEM/05a2dafd-f1a2-4299-827b-bed7c72d115e.png?resizew=181)
![](https://img.xkw.com/dksih/QBM/2020/7/10/2502987699486720/2503093038432256/STEM/d98a8890-1d2f-43fd-bbcb-db9083839ca9.png?resizew=234)
(Ⅰ)如图①,若
,求
的大小;
(Ⅱ)如图②,过点
作
的切线,交
的延长线于点
.若
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af620f6d204d310d8e3f267fdd6c3f8.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/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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2020/7/10/2502987699486720/2503093038432256/STEM/05a2dafd-f1a2-4299-827b-bed7c72d115e.png?resizew=181)
![](https://img.xkw.com/dksih/QBM/2020/7/10/2502987699486720/2503093038432256/STEM/d98a8890-1d2f-43fd-bbcb-db9083839ca9.png?resizew=234)
(Ⅰ)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69520162c5fdd724aa0b642a33de2a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
(Ⅱ)如图②,过点
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad88897831a99f4a8e2c2575abaf0a94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
【推荐2】如图,Rt△ABC中,∠ABC=90°,以AB为直径作⊙O,交AC于点E,点D为⊙O上一点,且CD=CB.连接DO并延长交CB的延长线于点F.
(1)求证:CD是⊙
的切线.
(2)若
,连接
.
①求图中阴影部分的面积;
②求DF的长.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/2bbe599b-eba3-4481-aaef-0483ba5e62c6.png?resizew=137)
(1)求证:CD是⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96adf2f6889345bbfa56491574904b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
①求图中阴影部分的面积;
②求DF的长.
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,
是
的直径,
的中点
在
上,
于
.
![](https://img.xkw.com/dksih/QBM/2018/11/16/2076705723277312/2080835647823872/STEM/6103ceb7b967458ba5b570ecfe95b798.png?resizew=97)
求证:
是
的切线;
若
,
,求
的半径.
![](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/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6402a3bb6be38f5bfafacc86c7bd008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/2018/11/16/2076705723277312/2080835647823872/STEM/6103ceb7b967458ba5b570ecfe95b798.png?resizew=97)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b826293fd7cf6dc42bfc221346e6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb672cd9b920179de185fb959f76ff6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19381fa72acd3baaed536b28703fd9fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9ccea461315a9d05aa0193b937d4bfe.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,
的半径为2,点A是
的直径
延长线上的一点,C为
上的一点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/645d41fc-54c4-4de8-885f-c9dafa84a34e.png?resizew=187)
(1)求证:直线
是
的切线;
(2)求
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/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd95dc30c0344788b94289c464a3158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/4/645d41fc-54c4-4de8-885f-c9dafa84a34e.png?resizew=187)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次