名校
解题方法
1 . 将边长
的矩形
按如图所示的方式折叠,折痕过点
,折叠后点
落在边
上,记
,则折痕长度![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd1846e964fd60c54888a3c706a97442.png)
______ .(用
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de49f19ea0a087c50d9a1b3409403693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd1846e964fd60c54888a3c706a97442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
解题方法
2 . 已知角
的终边上有一点
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d8cc13666ef5e288a3c98e2fc56aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
3 . 如图,在平面直角坐标系中,锐角
,
的终边分别与单位圆交于
,
两点,如果点
的纵坐标为
,点
的横坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/e8ea919f-9b13-4590-acd0-8f19a6065def.png?resizew=164)
(1)求
的值.
(2)将
绕原点
顺时针旋转
到
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/e8ea919f-9b13-4590-acd0-8f19a6065def.png?resizew=164)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28bc6ce7e631bcd313e0f30a13e47f5a.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
4 . 已知点
为角
终边上一点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9d2938029ea70cf742d2e526886da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e7cd4e866f7e0e38c51a799b087ace.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 如图,设
是单位圆和
轴正半轴的交点,点
是单位圆上的一点,
是坐标原点,
,且
且
.
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9b6016943827cd505ed34b83c865a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f473481e4c02438f9090f1bc1be6a092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51f612c3fee55e7aa97672135f781a50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27ae2bb53fc7db5ffe0ef02b7490a1eb.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/726db0d1d29fd6df456c946f5da5376c.png)
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名校
解题方法
6 . 在
中,
边上的高为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b939bf0591883ab80d9e58a03718c79.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c9942f4bd614cd1a0f17567a78bd2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a93e2a81536c09565931293b515b413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b939bf0591883ab80d9e58a03718c79.png)
您最近一年使用:0次
2024-03-22更新
|
438次组卷
|
2卷引用:湖南省邵阳市2024届高三第二次联考数学试题
名校
解题方法
7 . 已知角的顶点与原点重合,始边与
轴非负半轴重合,若
是角
终边上一点,且
,则
( )
A.![]() | B.3 | C.![]() | D.1 |
您最近一年使用:0次
2024-03-22更新
|
456次组卷
|
2卷引用:江西省部分学校2023-2024学年高一下学期开学考试数学试题
2024高三·上海·专题练习
解题方法
8 . 角的终边在直线
上,则
的值是
您最近一年使用:0次
2024高三·全国·专题练习
解题方法
9 . 如图,在平面直角坐标系
中,以
轴为始边作两个锐角
,它们的终边分别与单位圆相交于
两点,
的纵坐标分别为
,
.求
的值;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/22/94756d91-ed57-429f-9074-544856d2a8e6.png?resizew=165)
您最近一年使用:0次
10 . 以坐标原点为顶点,x轴非负半轴为始边的角
,其终边落在直线
上,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次