名校
解题方法
1 . 已知
.
(1)若
,求
的值;
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d167dab1486cf04fdc9931a51f6b5ee3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f280aa9106f8983fa107da81a2ce1bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c3fbeb33c726679a3201f4cdb4d797f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908becf9be0e3b32e40b127b417351b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db796b223b35e52aa7b4114da8072f5.png)
您最近一年使用:0次
名校
2 . 若
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72a01ed551bb6cde71b039daf55aa41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07199b7a4423dd44829afe1708feb702.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-01-05更新
|
1775次组卷
|
5卷引用:辽宁省锦州市北镇市满族高级中学2024届高三下学期第一次月考数学试题
辽宁省锦州市北镇市满族高级中学2024届高三下学期第一次月考数学试题辽宁省沈阳市五校联考2024届高三上学期期末数学试题江西省上饶市广丰区丰溪中学2023-2024学年高一上学期期末模拟数学试题(已下线)8.2.1 两角和与差的余弦-【帮课堂】(人教B版2019必修第三册)安徽省合肥市第一中学2023-2024学年高一上学期素质拓展训练(9)数学试题
名校
3 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b684e9762547193c48ffc3b43e9279f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-15更新
|
1020次组卷
|
4卷引用:河南省信阳市信阳高级中学2024届高三上学期第七次大考数学试题
河南省信阳市信阳高级中学2024届高三上学期第七次大考数学试题河南省青桐鸣2024届高三上学期12月大联考数学试题(已下线)考点11 倍(半)角公式及其应用 --2024届高考数学考点总动员【讲】(已下线)第六章 三角(1)-单元速记·巧练(沪教版2020必修第二册)
解题方法
4 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536e072eb0439a5e5b430cd55a129374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc88c6700552c28a992d7084d7ecd611.png)
A.![]() | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-29更新
|
811次组卷
|
2卷引用:广东省江门市2024届高三上学期11月大联考数学试卷
解题方法
5 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ccb49239ecc5eb9062fd85aeddcce9.png)
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b61e22083e790774ff7edec135a2a42.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ccb49239ecc5eb9062fd85aeddcce9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b61e22083e790774ff7edec135a2a42.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6f323b5287e5310a9e3e6a6f2a5cc7.png)
您最近一年使用:0次
名校
解题方法
6 . 在平面直角坐标系
中,点
,
,则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497ec5a3ee54013768e6c2a1c6475020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a935083858adda355e472a422b17bc7.png)
A.线段![]() ![]() | B.线段![]() |
C.当![]() ![]() ![]() | D.当![]() ![]() ![]() |
您最近一年使用:0次
7 . 已知
,
,
.
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0022b7a6e7fc48046177f1475e97b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f162fe3969ecfcd254bed59791f586f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e1a601216ec7f21f10d06224013e339.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e744af0f65e797a35d976c20f2dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba781b7dafa6870b89c06ac56299d5d.png)
您最近一年使用:0次
名校
解题方法
8 . (1)已知
,求
的值;
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a73dd80e03757e3fbef3e39b026e71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b7a83ac01f453be15d2d23d4f79024.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52153e961a8d4b092d9d71bd16fe58b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a080cab44a7d3605430d67b207f9be.png)
您最近一年使用:0次
9 . 已知
.
(1)求
的值;
(2)已知
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505c561d5e798fc257df1d99c1de11e9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c22d98ce28002ff139743ed4c15074.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590c21b6b8b6eac1be72ca0978253ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f978577ba1b27609441e68eb351fba.png)
您最近一年使用:0次
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10 . 若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8807d7a6387cd566aa94f0e1732f4676.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5788b882934fa2de9a4cd1e395657ff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d2f9141930b2b0fddfc9953f584649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8807d7a6387cd566aa94f0e1732f4676.png)
您最近一年使用:0次