解题方法
1 . 如图,
为半圆的直径,
,
为圆心,
是半圆上的一点,
,将射线
绕
逆时针旋转
到
,过
分别作
于
,
于
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/d75447d5-0614-4a97-86c7-655cbd0ff880.png?resizew=230)
(1)建立适当的直角坐标系,用
的三角函数表示
两点的坐标;
(2)求四边形
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea3b4fdf84e46b532f26535612aef8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53762f91167ecc234f382edf79bf6f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ededa0e19291b5b7eb9884af5bdeb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84df2b06cc0cff27ae92126df705b3ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/d75447d5-0614-4a97-86c7-655cbd0ff880.png?resizew=230)
(1)建立适当的直角坐标系,用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cb7a12bb8797615303fc20adb9f988.png)
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2021-08-24更新
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677次组卷
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4卷引用:北京市延庆区2020-2021学年高一下学期期中考试数学试题
解题方法
2 . 在平面直角坐标系
中,角
,
的顶点都与坐标原点重合,始边都落在x轴的正半轴.角
的终边与单位圆的交点坐标为
,将角
的终边逆时针旋转
后得到角
的终边.
(1)直接写出
,
的值;
(2)将
用含
的代数式表示;
(3)求
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/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bfa4ad66b6e291183fc7df12fb48b92.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/5b5858ee1ce52b251816757257a11c29.png)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b04da7eac640b5b735da7fb5da8cfd.png)
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解题方法
3 . 在平面直角坐标系
中,角
的顶点为坐标原点,始边与
轴的非负半轴重合,终边交单位圆
于点
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a44adc5f3c06478163385293d1a522.png)
___________ .
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e990dfbda9f362d78eb07c11b3dda95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4753f4a4456d0df13843b71015bfa14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a44adc5f3c06478163385293d1a522.png)
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名校
解题方法
4 . 已知角
的顶点在坐标原点,始边在
轴的正半轴上,终边与单位圆交于第二象限的点P,且点
的纵坐标为
,则
( )
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ff5e43ab9c11b2b72f569640153783.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-06-04更新
|
1200次组卷
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9卷引用:北京市2021届高三高考模拟数学试题
北京市2021届高三高考模拟数学试题北京市第二十二中学2022届高三上学期期中数学试题北京市第九中学2022届高三下学期保温考试数学试题(已下线)考点14 三角函数的基本概念、同角三角函数的基本关系与诱导公式-备战2022年高考数学(理)一轮复习考点帮(已下线)5.1 三角函数的定义(精讲)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)(已下线)5.3 诱导公式-2021-2022学年高一数学同步辅导讲义与检测(人教A版2019必修第一册)(已下线)第11练 诱导公式河北省石家庄联邦2023-2024学年高一上学期第三次月考(12月)数学试题江西省南昌市第十九中学2022-2023学年高三下学期第一次月考理科数学试卷
5 . (1)已知角
的终边经过点
求
的值;
(2)已知
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b02f5aec798ff395d0c3a881c1cec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd6344c94394c2b18aa1e07b274f7aa.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d0e0622391335e3bba3ffc71ffefc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba80eb5253bed4d4834ebbf39980424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
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名校
解题方法
6 . 已知角
的顶点与坐标原点
重合,始边与
轴的非负半轴重合,终边过点
.
(1)求
,
;
(2)若角
满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fef7db3b27feeb2f56def32b1f1e65.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608e4fdec82794fbfcaa34e882bae87c.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61e2e7cc4834161983649bfac47d872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a71788c5babc2be5da0b5a2bd000601.png)
您最近一年使用:0次
2021-03-07更新
|
866次组卷
|
7卷引用:北京市石景山区2022-2023学年高一下学期期末考试数学试题
7 . 在平面直角坐标系
中,角
以
为始边,其终边与单位圆
的交点为
.
(1)求
,
的值;
(2)若
,求函数
的最小正周期和单调递增区间.
![](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/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c64a66fbe72a61b249ae4ca4d91b7cf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8556ee1d0650eb6a7c0b37bc4f8fedd1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f102439ebd1efd422f04209ecec2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de86ffdb33433ce405fa662200c1771c.png)
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2021-01-21更新
|
344次组卷
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3卷引用:北京市丰台区2020-2021学年度高一上学期期末练习数学试题
名校
解题方法
8 . 在平面直角坐标系
中,
、
是位于不同象限的任意角,它们的终边交单位圆(圆心在坐标原点
)于A、B两点.若A、B两点的纵坐标分别为正数a、b,且
,则a+b的最大值为( )
![](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/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c2577a5c28b1b45f498e6d9a1b2ab2.png)
A.![]() | B.![]() | C.![]() | D.不存在 |
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2021-01-15更新
|
502次组卷
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6卷引用:北京师范大学第二附属中学2021-2022学年高一下学期期中数学试题
北京师范大学第二附属中学2021-2022学年高一下学期期中数学试题上海市静安区2021届高三上学期一模数学试题江苏省苏州市八校2020-2021学年高三上学期期末联考数学试题(已下线)考向10 三角恒等变换-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)考向21基本不等式-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)专题06 三角函数(模拟练)-2
9 . 在平面直角坐标系xOy中,以Ox为始边的两个角
,
的终边分别与单位圆O交于点M,N,已知M,N关于原点对称
(1)若点M的坐标为
,求
,
的值;
(2)当
时,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(1)若点M的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1f9e2a36dcab6934f15e84452c91e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/941647c1647511a05d56a58f0a21472d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8b6c6718a3a7ba6598ee914187bee0.png)
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名校
10 . 以
为始边作钝角
,角
的终边与单位圆交于点
,将角
的终边顺时针旋转
得到角
.角
的终边与单位圆相交于点
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bd36d19352628cb54c214436ee3322.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/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e27bd43bc4af1e3b28d0de0cc561b879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c54705d32dc6820f1a90eec2225dcf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-09-14更新
|
528次组卷
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4卷引用:北京市人民大学附属中学2021届高三(上)8月练习数学试题