1 . (1)求值:
;
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b6619bfaf39d99e64326417b124e8d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2c80754d283c18cdeb42b2e3e1cf8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f41c0524e6eacd9b1f1e5c628a65d7.png)
您最近一年使用:0次
2020-12-03更新
|
572次组卷
|
2卷引用:山西省吕梁市2021届高三上学期期中文科数学试题
解题方法
2 . 已知
,
都是锐角,
,
.
(1)求
的值;
(2)求
的值.
![](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/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a40cb7958c821d2af477e4b26874377.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
您最近一年使用:0次
名校
3 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a21d8a5783699cdabc1894ed635f7f.png)
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a21d8a5783699cdabc1894ed635f7f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1ac68aa01c4bfbeef78b366075ae3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb9cf37f862211abf63a3414b82b911.png)
您最近一年使用:0次
4 . 已知
.
(1)求
的值;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54a57b41b3fa4ecdbd340a07fec689e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94882eaa7cc0166cbf3c68cb2e52e595.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf1bb8330b509bbc9cffa58f76d9ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d58d3b03fee3f0a6929bcbb019f6601.png)
您最近一年使用:0次
2016-12-04更新
|
1392次组卷
|
2卷引用:2015-2016学年山西大学附属中学高一下期中数学试卷