名校
1 . 在
中,已知
,
(1)求角
;
(2)若
,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896815e73375b8bb672424d8267d2be2.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95faa14eb62523f9c1c28ef389c6a2c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db1a535350fccbc74ab73b9defde9a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
您最近一年使用:0次
2018-04-23更新
|
505次组卷
|
4卷引用:山西大学附属中学2017-2018学年高一4月月考数学试题
解题方法
2 . 化简:
(1)
;
(2)
(
为第四象限角).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489a2f08640a2a3b4e220ed7e3e5c75f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0c40ad6ab7741c3d3c39bb2061b04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
3 .
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9751de76560c2712d4fd9294b3b87b71.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-03-18更新
|
1242次组卷
|
9卷引用:山西省太原市2019-2020学年高一年级下学期期末质量检测数学试题
名校
4 .
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16257cd54b66d9b3fb83b8cb3e54438.png)
A.0 | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
2017-10-17更新
|
736次组卷
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3卷引用:山西省朔州市怀仁县大地学校2019-2020学年高一下学期6月月考数学试题
名校
解题方法
5 . 已知向量
=(cos
,sin
),![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
=(-sin
,-cos
),其中x∈[
,π].
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a92e6eba8dab638fd66831cd3a0b6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f33812860f09b18662de5b3cf429fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f33812860f09b18662de5b3cf429fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427fa45527d0ce469bfd060bf6f991f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
(1)若|+
|=
,求x的值;
(2)函数f(x)=·
+|
+
|2,若
恒成立,求实数c的取值范围.
您最近一年使用:0次
2016-12-04更新
|
685次组卷
|
4卷引用:山西省晋中市平遥二中2018-2019学年高一下学期期中数学试题
6 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d1ae59e498b3afc191e25eecf228ae.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d1ae59e498b3afc191e25eecf228ae.png)
您最近一年使用:0次
2016-12-04更新
|
701次组卷
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3卷引用:2015-2016学年山西大学附属中学高一下期中数学试卷