1 . 已知角
的顶点与原点O重合,始边与
轴的非负半轴重合,它的终边与单位圆交点为
.
(1)求
和
的值;
(2)求
的值.
![](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/161f55303651fe329115de11478ac01a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142fb1445891481c867a0c4f849a5742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0278175804188fca973ab3e9d494906.png)
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2020-04-08更新
|
992次组卷
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5卷引用:北京市密云区2019-2020学年高一上学期期末数学试题
2 . 已知角
的终边与以原点为圆心的单位圆交于点
,角
的终边与角
的终边关于直线
对称.
(Ⅰ)若
为第三象限角,点
的纵坐标为
,
(i)求
和
的值;
(ii)求
的值.
(Ⅱ)求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/d77f5191798242b7b9b88a75e17e4425.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af6ddf31b7d9225a4239883af72d153b.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6aad40c02d5217af4535853938065b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(ii)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c65f2b2f4c2c06a9281d4dc7c0f4fa0.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d00a4d9f7f00c39c8ac36704d1522f.png)
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解题方法
3 . 已知角
的终边经过点
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f4d63efe3b074b8644890d2c4902f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-03-26更新
|
455次组卷
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3卷引用:北京交大附中2019-2020学年高一(下)期末数学试题
解题方法
4 . 若角
的终边与单位圆的交点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a930041958b49ead6dba188c21f8f5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a2b8dae45cd30a752aedb1ca66c30a.png)
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5 . 若角
的终边过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213d783f0ae55e385002bd6df9a0ac21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
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2020-02-29更新
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483次组卷
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2卷引用:北京师范大学附属中学2019-2020学年高一下学期期末数学试题
名校
6 . 如图,角
以
为始边,它的终边与单位圆
相交于点
,且点
的横坐标为
,则
的值为( )
![](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/1dde8112e8eb968fd042418dd632759e.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/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51080a7a90cf4964c15e6316fbe658f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-09更新
|
951次组卷
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11卷引用:北京实验学校2020-2021学年高二上学期期末数学试题
北京实验学校2020-2021学年高二上学期期末数学试题2020届北京市海淀区高三上学期期中数学试题北京市海淀区2021届高三模拟试题(一)北京市中关村中学2023届高三上学期10月月考数学试题北京交通大学附属中学2022-2023学年高一下学期期中数学试题北京交通大学附属中学第二分校2022-2023学年高一下学期期中考试数学试卷北京市第十二中学2024届高三10月月考数学试题北京高一专题01三角函数(第一部分)北京市第一六一中学2023-2024学年高一下学期期中考试数学试卷宁夏平罗中学2022届高三上学期第一次月考数学(文)试题四川省达州市开江县任市中学2021-2022学年高三上学期第一次月考数学(文)试题
7 . 筒车是我国古代发明的一种水利灌溉工具,明朝科学家徐光启在《农政全书》中用图画描绘了筒车的工作原理(如图1).因其经济又环保,至今还在农业生产中得到使用(如图2).假定在水流量稳定的情况下,筒车上的每一个盛水筒都做匀速圆周运动.因筒车上盛水筒的运动具有周期性,可以考虑利用三角函数模型刻画盛水筒(视为质点)的运动规律.将筒车抽象为一个几何图形,建立直角坐标系(如图3).设经过t秒后,筒车上的某个盛水筒
从点P0运动到点P.由筒车的工作原理可知,这个盛水筒距离水面的高度H(单位:
),由以下量所决定:筒车转轮的中心O到水面的距离h,筒车的半径r,筒车转动的角速度ω(单位:
),盛水筒的初始位置P0以及所经过的时间t(单位:
).已知r=3
,h=2
,筒车每分钟转动(按逆时针方向)1.5圈, 点P0距离水面的高度为3.5
,若盛水筒M从点P0开始计算时间,则至少需要经过_______
就可到达最高点;若将点
距离水面的高度
表示为时间
的函数,则此函数表达式为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562e46d9be4ad1480112b4c20e871742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/c97e9ac1-bcee-46df-9e67-3075a4ff531c.png?resizew=383)
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8 . 若角
的终边经过点
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f219e145bb4c8409e11f0333f708ebe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-08更新
|
720次组卷
|
4卷引用:北京市通州区2019-2020学年高一上学期期末数学试题
9 . 在物理学中,把物体受到的力(总是指向平衡位置)正比于它离开平衡位置的距离的运动称为“简谐运动”.可以证明,在适当的直角坐标系下,简谐运动可以用函数
,
表示,其中
.如图,平面直角坐标系
中,以原点
为圆心,
为半径作圆,
为圆周上的一点,以
为始边,
为终边的角为
,则点
的坐标是________ ,从
点出发,以恒定的角速度
转动,经过
秒转动到点
,动点
在
轴上的投影
作简谐运动,则点
的纵坐标
与时间
的函数关系式为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b659146043ee17e549578998318b2c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208b8e800d462cb6cd943309b77632dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03c1aff4702ed20f1dffe1096999bdb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ad60e1f69e473d9e4a7d67a0f66752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/5c64f456-bb31-4ae9-af30-5003642efb21.png?resizew=147)
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10 . 在平面直角坐标系
中,设锐角
的始边与
轴的非负半轴重合,终边与单位圆交于点
,将射线
绕坐标原点
按逆时针方向旋转
后与单位圆交于点
,过
作
轴的垂线交
轴于
.
(1) 求
,
;
(2)求
的面积
.
![](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/df32f497ef2b36c0d19a98e0cf2971a7.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/b1ad72d7565699d1ebb741eb0ce12bac.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1) 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aef681e03396ab434adb3d28bd26150.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccccba8f0b07e4f9844bf21d6459eedb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
2020-01-18更新
|
212次组卷
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2卷引用:北京市平谷区2019-2020学年高一上学期期末数学试题