1 . 已知角
的终边经过点
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4934693fe6926cde18b8d268db4f0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8263d4cfc5094f23b146b4e38f22640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0d6dbad2b426f84285dd5dd93cc9af.png)
您最近一年使用:0次
2023-02-01更新
|
442次组卷
|
2卷引用:沪教版(2020) 一轮复习 堂堂清 第三单元 3.1 任意角的三角定义
2 . 如图,
于D,
于E,BD与CE相交于
,则图中线段的比不能表示
的式子为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/4be69b8c-9234-4791-b9ff-aa371e97e8e4.png?resizew=182)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f913298f0fae9f55377a8deab9f099dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/4be69b8c-9234-4791-b9ff-aa371e97e8e4.png?resizew=182)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 如图,一个大风车的半径为
旋转一周,它的最低点
离地面
,它的右侧有一点
且距离地面
.风车翼片的一个端点
从
开始计时,按逆时针方向旋转.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/7fb9099f-9949-4240-9658-285eee58af6c.png?resizew=141)
(1)试写出点
距离地面的高度
关于时刻
(min)的函数关系式
;
(2)在点
旋转一周的时间内,有多长时间点
距离地面超过
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/300007fa931eb9efb3b93ed36dae7f57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7854968bbf6576a1fd9926ee0d4d63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/7fb9099f-9949-4240-9658-285eee58af6c.png?resizew=141)
(1)试写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/584ebbc78a5b00e791ea25e3959a789f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0225bca34eaf19544939b29153aac1.png)
(2)在点
![](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/39ea92883fe24b097c9a881ef8c92eb1.png)
您最近一年使用:0次
2023-01-13更新
|
564次组卷
|
4卷引用:江苏省盐城市上冈高级中学等2022-2023学年高一上学期期末联考数学试题
江苏省盐城市上冈高级中学等2022-2023学年高一上学期期末联考数学试题第一章 三角函数(基础检测卷)(已下线)1.8 三角函数的简单应用(课件+练习)河南省驻马店高级中学2022-2023学年高一下学期第一次月考数学试题
解题方法
4 . 已知点
在角
的终边上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fefe93ea3158db78fc4b186cf71058d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
您最近一年使用:0次
解题方法
5 . 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
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/3e9039f8-35a5-402f-9830-72f99ff12a1d.png?resizew=146)
(1)求点
的坐标;
(2)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,求点
的纵坐标
与时间
的函数关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e4232d15d5b5a890b9dab9b6084bf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.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://img.xkw.com/dksih/QBM/editorImg/2023/1/27/3e9039f8-35a5-402f-9830-72f99ff12a1d.png?resizew=146)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)从
![](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/eeebe2d626de76ae34a1a42b62a1a3bd.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)
您最近一年使用:0次
解题方法
6 . 已知角
的顶点与原点
重合,始边与
轴的正半轴重合,它的终边过点
.
(1)求
的值;
(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/3c111a7b669770a2cc28e403ade76169.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa26d96d02b0ea596a0c3357ae27fa0.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577fd4d79427834eecacba91aa1e7afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
解题方法
7 . 1874年欧拉第一次提出将角置于圆内,以有向线段与半径的比值定义三角函数.如图,在单位圆中,定义角
的正弦为有向线段MP,角
的余弦为有向线段OM.若在单位圆内,角
和角
均以Ox轴为始边,两角的终边关于
轴对称,且对应正弦的值均为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c634aa65493615fbb40f1352a88c5aa3.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c634aa65493615fbb40f1352a88c5aa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/26/7600a162-548b-4cd4-9103-c5d793ce5e82.png?resizew=136)
您最近一年使用:0次
解题方法
8 . 已知点
的坐标为
,将OA绕坐标原点顺时针旋转
至OB,则点
的横坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5251103ec60999d440a7f33dfaf570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次
解题方法
9 . 已知角
的终边经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d45c243d18b3c631dc5d7c950b7abe.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e8da3e18d6d9d3ccd5974f2c187e44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d45c243d18b3c631dc5d7c950b7abe.png)
您最近一年使用:0次
10 . 角
的终边与单位圆的交点坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6e3fb5cd636f1275e4670cce14f457.png)
您最近一年使用:0次