名校
解题方法
1 . 已知
.
(1)若
为锐角,求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef966cdd137b3b10e290201b4d17542e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55726866af15579b678a89c463eb3988.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec4d7e9c3b8a096fb3f0d5b6ddb1400.png)
您最近一年使用:0次
2021-01-28更新
|
508次组卷
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4卷引用:湖北省荆州市六县市区2020-2021学年高一上学期期末数学试题
解题方法
2 . 已知
为锐角,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d90078ecbffa247f6d5e958e8bc38e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . (1)已知角
的终边经过点
,且
,求
和
的值.
(2)已知
,
,且
,求角
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f046b05eaffe6dd8d1cea33884dc83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92b5f617460604b942a9c302b3a41ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b1670b2b446ace5bc12d7385b8e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9e3b2b77bc9b54f3ae0b332e705c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6659ee24daa8fd4283e1077def819937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
2020-02-13更新
|
754次组卷
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2卷引用:湖北省荆州中学2019-2020学年高一上学期期末数学试题
名校
4 . 已知
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234c0cd7761a01c5b0b6a9cd6ff0c6b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f33d78313eba7646dcb3181f10b5dd5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67de715c2131a0f7769e8ecc96e5dc3.png)
A.![]() | B.-![]() | C.-![]() | D.-![]() |
您最近一年使用:0次
2019-03-28更新
|
679次组卷
|
2卷引用:【校级联考】湖北省荆州中学、宜昌一中等三校2018-2019学年高一3月联考数学试题
名校
5 . 计算cos47°cos13°-cos43°sin167°的结果等于( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-01-15更新
|
1027次组卷
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2卷引用:【全国百强校】湖北省荆州中学2017-2018学年高一上学期期末考试数学(理)试题