1 . 在单位圆中,确定下列三角函数值的符号:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a174e0732d681af49fe43b6d5137f822.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642c97290a730c9f87507b54a5c51de.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25699e5cdc573e3b5342959893204b9a.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bda74bb7e327b5e0035319684c4a6b.png)
您最近一年使用:0次
2023-10-08更新
|
297次组卷
|
3卷引用:北师大版(2019)必修第二册课本习题第一章4.1单位圆与任意角的正弦函数、余弦函数定义
北师大版(2019)必修第二册课本习题第一章4.1单位圆与任意角的正弦函数、余弦函数定义(已下线)4.1 单位圆与任意角的正弦函数、余弦函数定义北师大版(2019)必修第二册课本例题4.1 单位圆与任意角的正弦函数、余弦函数定义
2 . 求值:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96cdf3faf9c78a37f589e0fcad970ec9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ff6e5af2bb11fb19c906a0a48e186c.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7622212ab238875527c0160b326497.png)
您最近一年使用:0次
2023-09-25更新
|
245次组卷
|
4卷引用:苏教版(2019)必修第一册课本例题7.2 三角函数概念
解题方法
3 . 对于表中的角
,计算
的值,填写下表:
把
的值看作横坐标,对应的
的值看作纵坐标,在平面直角坐标系中描出点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
0 | |||||||||||||
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb48ec1e5d6adb6fe000de36df2136ae.png)
您最近一年使用:0次
4 . 利用公式求下列三角函数值:
(1)
:
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eebbb99ec360af74598acf086f57fe5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5773c1de316bdf37744be03de92d44a3.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f9182843ce1f153137022cf14625a1.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ae42817b28497b6e5db1f331e0b943.png)
您最近一年使用:0次
5 . 计算下列各式的值:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c325efe0265cc4a3121d79222422fb1e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb62cd652fd07b810d6bc11c61e290d.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50754a1a6d490cd01d48303269a65d24.png)
您最近一年使用:0次
解题方法
6 . 已知角
的终边上一点
,求
,
,
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd5baa8bce5200d7de2b88e5812725c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1caadacfc6832b0d2f2a5667567f6485.png)
您最近一年使用:0次
7 . 化简:
(1)
;
(2)
;
(3)已知
,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa3c08f8bef776fcb8d58e69d4a5692.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf84e588f15ea3be923b35f8286f186a.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a327558c5f2d465cecb4a6a44c5213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10e903b4fa2088fcd3b85405e25132b.png)
您最近一年使用:0次
8 . 求下列各值.
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662a9660a659d247c7632024ebb7bbc4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce7552fc0527cee1d98b774ed0f2509.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8469b4933ff6bd25b32c1f5a79770182.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f951f9f94e4bc41dc11e71b1635d0418.png)
您最近一年使用:0次
名校
9 . 求下列各三角函数的值
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9576b34671292b97097c7bd3a6a756e3.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065f1a0cfe72a6e7732f8a79f6d41cfb.png)
(3)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9576b34671292b97097c7bd3a6a756e3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065f1a0cfe72a6e7732f8a79f6d41cfb.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ebc038bd596bec61e8d16c73f4870a.png)
您最近一年使用:0次
名校
解题方法
10 . 化简.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbffd3d3e3149267e917203b28b014a.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbffd3d3e3149267e917203b28b014a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db0b3bb84552bebd59549b08faebd1c.png)
您最近一年使用:0次