1 . 已知角
的终边与单位圆
在第一象限交于点
,且点
的坐标为
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935153fc876be9783979f6746272232c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e9490197c94bcd70cdb006935d388b.png)
您最近一年使用:0次
2020-04-08更新
|
1271次组卷
|
3卷引用:山东省烟台市2018-2019学年高一下学期期中数学试题
名校
2 . 在平面直角坐标系xOy中,将向量
绕原点O按逆时针方向旋转x弧度得到向量
,其中
,且点M的坐标为
.
(1)若
,求点N的坐标;
(2)记函数
,若
,且
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00da1c29aea46e36cda0f5780966bb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55bf0d9510623b443eab082ec60fba85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c87874458fabe50aff5e19d586d5d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b92d2bbeed206ab7e8f3e237e0a8708e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa072e56e4cdf7a02f5a67bd35dbabc.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65432e4da878e82f9dedc9ee1defe6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc8ef902dc3481ae24d888f57466154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b2f1bbbffd743c4399448908a42e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2020-02-20更新
|
172次组卷
|
2卷引用:湖南省衡阳市第一中学2018-2019学年高一下学期期中数学试题
名校
3 . 阅读问题:已知点
,将
绕坐标原点逆时针旋转
至
,求点
的坐标.
解:如图,点
在角
的终边上,且
,则
,
,点
在角
的终边上,且
,于是点
的坐标满足:
,
,即
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/54c68671-8d96-4e05-9c8e-744459734b16.png?resizew=191)
(1)将
绕原点顺时针旋转
并延长至点
使
,求点
坐标;
(2)若将
绕坐标原点旋转
并延长至
,使
,求点
的坐标(用含有
、
的数学式子表示);
(3)定义
,
的中点为
,将
逆时针旋转
角,并延长至
,使
,且
的中点
也在单位圆上,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4258b2df7c7496adf889300faf969699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
解:如图,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52705567101a48893de582656ef41527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5fdec18642892e189c93a15b0d91cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7734865c5a5efb104e40dc63315f4dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887a8767eb85228d36e6f25cf4481287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9b5996067a3fc9adcf0ca178dddf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3c1448d71ac3b2d0a7d9b5800020f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616c8a6d575cacba70ad686a18eeb0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd00e332b2ce1c44664bc54510839b95.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/54c68671-8d96-4e05-9c8e-744459734b16.png?resizew=191)
(1)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed29a3dbcfb2579ce926a6f86b19d7e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620a1379a10847915644350ff2ff90bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(3)定义
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af405a054bfe7fb7ce40e48d816467e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acff11b6435ec1ad0235698bb26ea42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718db7266fcd1f56a5992783235ab720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
2020-01-18更新
|
318次组卷
|
2卷引用:上海市七宝中学2015-2016学年高一下学期期中数学试题
名校
4 . 如图,在直角坐标系
中,点
是单位圆上的动点,过点
作
轴的垂线与射线
交于点
(
在
的上方),将始边与
轴的正半轴重合,且终边在射线
上的角记为
;
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/6018d014-d560-4b3f-91f5-f6a80be7ee8c.png?resizew=150)
(1)用
表示
的坐标;
(2)当
为何值时,
面积有最大值?并求出
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cb9d2058893e48e228f078cd1de8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187a10dd24462c289fe2709d4a9f4cf7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/6018d014-d560-4b3f-91f5-f6a80be7ee8c.png?resizew=150)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45b8b000c9c286bff8a480dbf03b513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45b8b000c9c286bff8a480dbf03b513.png)
您最近一年使用:0次
名校
5 . 如图,在直角坐标系
中,角
的顶点是原点,始边与
轴正半轴重合,终边交单位圆于点
,且
.将角
的终边按逆时针方向旋转
,交单位圆于点
.记
.
![](https://img.xkw.com/dksih/QBM/2019/9/2/2282083453345792/2285664564445184/STEM/d604da6cc2a44f70b6d33222de6180b6.png?resizew=209)
(1)若
,求
;
(2)分别过
作
轴的垂线,垂足依次为
.记
的面积为
,
的面积为
.若
,求角
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11afee90cb68b244290bdc1d6a0642eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec3f0349a972389b6b799a2f10c76ff.png)
![](https://img.xkw.com/dksih/QBM/2019/9/2/2282083453345792/2285664564445184/STEM/d604da6cc2a44f70b6d33222de6180b6.png?resizew=209)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/865afa1f97658d54e0616094b6a6aee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(2)分别过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3304bc1372275307dce0bf4e98b8f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0574e32fad19571c0a9c9fcf839094ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8060a00d925f27135a7baff2d0e9d598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2019-09-07更新
|
482次组卷
|
3卷引用:江苏省宿迁市泗洪县第一高级中学2022-2023学年高一下学期期中数学模拟试题
名校
解题方法
6 . 已知角
的终边在第二象限,且与单位圆交于点
.
(1)求实数
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4086ef698da9dc824a1f3b127d9247a7.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22a069e1e5d818e510a552e01dcbb8d.png)
您最近一年使用:0次
2018-04-12更新
|
768次组卷
|
4卷引用:甘肃省银川二中2017-2018学年度高一第二学期数学期中考试试题
甘肃省银川二中2017-2018学年度高一第二学期数学期中考试试题【全国百强校】甘肃省银川二中2017-2018学年度高一第二学期数学期中考试试题河南省灵宝市实验高中2017-2018学年高一下学期第一次月考数学试题(已下线)2019年一轮复习讲练测【新课标版文】4.2 同角三角函数的基本关系及诱导公式【测】
名校
解题方法
7 . 已知点
,点
是单位圆上的任意一点,
.
(1)若点
的横坐标为
,求
的值;
(2)若
是锐角,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec6ce73c6786d50028addff089bbb64.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8e3ed4652d56b8f086d7f94707060a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5875c2e91cf00419937685cbe79bea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f058f3ebb0b297e2b9dd905f2047f930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e094f5ed5a123f1e6525699ce14dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3ce22382b268b8197502a1d5eaf883.png)
您最近一年使用:0次