名校
解题方法
1 . 已知
,
,
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6659ee24daa8fd4283e1077def819937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f8783429be686df75afcd56e847dfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7d26cb943e116d3e13422064b6d09f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
2020-02-18更新
|
425次组卷
|
2卷引用:陕西省西安市育才中学2018-2019学年高一下学期4月月考数学试题
11-12高一上·陕西·期末
2 . (1)化简:
;
(2)若
、
为锐角,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902349feef07182c32c90599cae57bce.png)
(2)若
![](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/5ab92c69395d938b7ee0032bb95fc93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cd2c3e1625bd401ce2eae2f51d189f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
您最近一年使用:0次