解题方法
1 . 一般地,对任意角
,在平面直角坐标系中,设
的终边上异于原点的任意一点
的坐标为
,它与原点的距离是
.我们规定:比值
分别叫做角
的余切、余割、正割,分别记作
,
,
,把
,
,
分别叫做余切函数、余割函数、正割函数,下列叙述正确的有( )
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf36001c438f5a2bd2e2f848e4341b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d494c34104f679bdbea537164f1907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e609ecb22257c1ca2fe78b1dc2e62141.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48bd75362790c061d70f80de8febc3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5cac6f59b3e1405a3b64d13c88e8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175c64c2a2393743bde92b3e46df42cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7688d35e68414fa995babd7437e678b.png)
A.![]() |
B.![]() |
C.![]() ![]() |
D.设![]() ![]() ![]() |
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21-22高一·全国·课后作业
解题方法
2 . 已知角α的终边经过点P(3,-4t),且sin(2kπ+α)=-
,其中k∈Z,则t的值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
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2021-12-29更新
|
516次组卷
|
4卷引用:【课时作业】5.2.1 三角函数的概念-2021-2022学年高一数学《新教材同步精典导学案》(人教A版2019必修第一册)
(已下线)【课时作业】5.2.1 三角函数的概念-2021-2022学年高一数学《新教材同步精典导学案》(人教A版2019必修第一册)人教A版(2019) 必修第一册 数学奇书 学业评价(三十九) 三角函数的概念河北省石家庄北华中学2022-2023学年高一下学期6月月考数学试题(已下线)【第二练】5.2.1三角函数的概念
21-22高一·全国·课后作业
解题方法
3 . 已知角α的终边上一点P(m,
),且cos α=
,求sin α,tan α的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6265f5256804ccaff618cf8c0675eb8e.png)
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21-22高一·全国·课后作业
解题方法
4 . 已知角
的终边经过点
,则
(1)
的值为________ ;
(2)
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889a5e04c5187fb20415a59ce6adeed5.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a9e6660b2461660830a4456d83fedc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cab409029254bbde199bb76eaadf57f.png)
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21-22高一·全国·课后作业
解题方法
5 . 如果
的终边过点
,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f90e2b862de25c66a18933e81d0ded1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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21-22高一·全国·课后作业
6 . 已知角
的终边经过点
,
且
为第二象限角,则:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
________ ;
(2)若
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd58f54e9659a9cb5964a2d48f539e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a729bdd594a6583588d8d695d2ecc70d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bae37e7df598efb7b59f726ce34e25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a78f437c6200129b76a454611b816f9.png)
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21-22高一·全国·课后作业
名校
7 . 已知角
的终边经过点
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f5fe1b58427215930a6554e34e7821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f331c3d96c5812a620e326373747eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-12-20更新
|
1489次组卷
|
4卷引用:专题5.2 三角函数的概念-2021-2022学年高一数学课后培优练(人教A版2019必修第一册)
(已下线)专题5.2 三角函数的概念-2021-2022学年高一数学课后培优练(人教A版2019必修第一册)河南省漯河市漯河实验高级中学2021-2022学年高一上学期第二次月考数学试题(已下线)解密06 三角函数的图象与性质(讲义)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(全国通用)(已下线)3.1 三角函数的定义(精练)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)
21-22高一·全国·课后作业
8 . 如图为一个观览车示意图.该观览车圆半径为
米,圆上最低点与地面距离为
米,
秒转动一圈,图中
与地面垂直.设从
开始转动,逆时针转动
角到
,设
点与地面距离为
.
![](https://img.xkw.com/dksih/QBM/2021/12/19/2875736190918656/2876694162046976/STEM/3fa38479-24a9-4323-92d5-e44d4b67f6e4.png?resizew=165)
(1)当
时,求
的值;
(2)若经过
秒到达
,求
与
的函数解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3779b4ea5477aebfe85113b0de1d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](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/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://img.xkw.com/dksih/QBM/2021/12/19/2875736190918656/2876694162046976/STEM/3fa38479-24a9-4323-92d5-e44d4b67f6e4.png?resizew=165)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98acb073f2f47d83b77c851fd16bc4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(2)若经过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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21-22高一·全国·课后作业
解题方法
9 . 若
、
的终边关于
轴对称,则下列等式成立的是( )
![](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)
A.![]() | B.![]() |
C.![]() | D.![]() |
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21-22高一·全国·课后作业
10 . 已知角
终边上有一点
,且
(
),试求
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1ad03940d720fc696f144cd4a41478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d1c254a6eba0797d46946fbee9dd05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43660b1543b3a2b46185f7629d28a963.png)
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