1 . 如图,在菱形
中,对角线
,
交于点
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/24625d20-f65c-459d-bb30-a777032638aa.png?resizew=163)
(1)求
的长;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd0763b031b7e6b6d87ce3554ac482d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/24625d20-f65c-459d-bb30-a777032638aa.png?resizew=163)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3281279fd172040eadc139ee61581a5a.png)
您最近一年使用:0次
2 . 在
中,
,
,若将
三边都扩大3倍得到
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171bba61008ab1d23730c46c1d9969d0.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c513dca3b8c31bc8d0ed4301e94cc1e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a2ccf448d0d8499a85092655a37309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156d51dcd94cf7c47d3397c112439c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171bba61008ab1d23730c46c1d9969d0.png)
您最近一年使用:0次
2023-03-01更新
|
176次组卷
|
3卷引用:福建省宁德市2022-2023学年九年级上学期期末质量检测数学试卷(一检)
3 . 如图,在边长为1的小正方形组成的网格中,
的三个顶点均在格点上,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/8/f5ba7dc2-1d5c-4889-b53a-71cc3de4817f.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/8/f5ba7dc2-1d5c-4889-b53a-71cc3de4817f.png?resizew=131)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 如图,在正方形
中,P是
边上的一点,且
,Q是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/4fc3bba0-4ddf-4b51-b3d2-cff3428121c8.png?resizew=112)
(1)求证:
;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f6da0b38239da9ef2469ba21bd2ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/5/4fc3bba0-4ddf-4b51-b3d2-cff3428121c8.png?resizew=112)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb60f151b51a61956d838a17e2c61.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ac0bc4661057b8f2f0d8b5cf9d402a.png)
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2023-02-28更新
|
85次组卷
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4卷引用:内蒙古自治区乌海市海勃湾区2022-2023学年八年级上学期期末数学试题
内蒙古自治区乌海市海勃湾区2022-2023学年八年级上学期期末数学试题海南省儋州市2022-2023学年九年级上学期期末数学试题(已下线)专题11 锐角三角函数及其运算(十种考法)-【好题汇编】备战2023-2024学年九年级数学上学期期末真题分类汇编(北师大版)(已下线)九年级数学开学摸底考(海南专用,范围:华东师大版九上+九下全部)-2023-2024学年初中下学期开学摸底考试卷
5 . 如图,在正方形方格纸中,每个小正方形的边长都相等,
、
、
都在格点处,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3281279fd172040eadc139ee61581a5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/85f668e2-1ee2-46e0-8d56-65286d972569.png?resizew=144)
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6 . 如图,边长为
的小正方形网格中,点
在格点上,过
三点的圆交
于点
,则
的正切值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/3c0b594d-1828-404a-a5f8-a54c28e3610c.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ebf9e3e07e7045023003a33b433f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144ed1bc3de2bf0d0ca1a4908a2b61e0.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/7cd1bc0388e7fad3e849ca39c67f5034.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/3c0b594d-1828-404a-a5f8-a54c28e3610c.png?resizew=134)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-21更新
|
179次组卷
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3卷引用:浙江省宁波市海曙区2022--2022学年九年级上学期期末数学试卷
浙江省宁波市海曙区2022--2022学年九年级上学期期末数学试卷浙江省宁波市海曙区2022-2023学年九年级上学期期末质量检测数学试题卷(已下线)九年级数学期末模拟卷02(浙江专用)(浙教版九年级上册+下册全部)-学易金卷:2023-2024学年初中上学期期末模拟考试
名校
7 . 如图,在边长为1的小正方形网格中,点A,B,C,D都在这些小正方形的顶点上,
,
相交于点O,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/f047d1aa-11e6-433c-9e87-76ea8094259e.png?resizew=264)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065ee5d91403f592f9b8d672ecfbcd0e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/f047d1aa-11e6-433c-9e87-76ea8094259e.png?resizew=264)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
2023-02-21更新
|
395次组卷
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4卷引用:安徽省宣城市2022-2023学年九年级上学期期末教学质量检测数学试卷
8 . 在
中,
,下列各式中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa79cdf8f5d2a621a13a7dc1b46bdb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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|
285次组卷
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5卷引用:安徽省宣城市2022-2023学年九年级上学期期末教学质量检测数学试卷
9 . 如图,在网格中,点
,
,
都在格点上,则
的正弦值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/a7c43337-3186-4569-809f-b94acd47cd08.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b28f28ced0531d1df34fcf04c6c67f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/a7c43337-3186-4569-809f-b94acd47cd08.png?resizew=156)
A.![]() | B.![]() | C.![]() | D.2 |
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3卷引用:福建省泉州市永春县、安溪县、丰泽区2022-2023学年九年级上学期期末考试数学试题
10 . 如图所示,
的顶点是正方形网格的格点,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/eedd4f3f-e4e6-4ce3-84af-945334b20bb7.png?resizew=141)
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2023-02-18更新
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450次组卷
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6卷引用:安徽省安庆市第二中学2022-2023学年九年级上学期数学期末检测