解题方法
1 . 若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1029ae8e4120c872408387aea94a3.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef966cdd137b3b10e290201b4d17542e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6f7a5dc6fd2137081c6ff5e7a44ff19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1029ae8e4120c872408387aea94a3.png)
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2021-03-24更新
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782次组卷
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3卷引用:沪教版(2020) 必修第二册 领航者 第6章三角 6.3 解三角形 每周一练(3)
沪教版(2020) 必修第二册 领航者 第6章三角 6.3 解三角形 每周一练(3)沪教版(2020) 必修第二册 领航者 一课一练 第6章 每周一练(3)(已下线)5.5 三角恒等变换-2021-2022学年高一数学上学期同步课堂习题测试(人教A版2019必修第一册)
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2 . 已知
,求
的值,那么在以下四个答案:①
;②
;③
;④
.其中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb414c57d482cdbf31cc66faa47a7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6860610ef315a8ade374cb2eb034777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c17ef7b955e7ffd413aee1acc1ee224d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9e3a81af6e2234f989b9456d3c1462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d4e9a2a47a68bf260f2b9812d176d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d364a5a229aee8f9b29e2ae4bb67d3.png)
A.①③ | B.①④ | C.②③ | D.②④ |
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2020-02-12更新
|
256次组卷
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2卷引用:上海市青浦高级中学2016-2017学年高一下学期3月质量检测数学试题
3 . 已知
为第二象限角,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce77dd44ad92e6a73e556f17daf1b66.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277e9a75b7ec584398950db026cdd534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce77dd44ad92e6a73e556f17daf1b66.png)
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2020-02-04更新
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242次组卷
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2卷引用:2016届上海市静安区高考一模(文科)数学试题
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4 . 已知
,
,求
(1)
的值;
(2)
的值;
(3)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7fdccadfa7469825f8a5ccbf495c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201f6e84279e80b85f394f4d930ed41.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339562558fee8fcacce4db2bd0feec89.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e387687ef705d7b6694aedde85a2e3a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a035e688c7cc5382435f05c4c5fa1b9.png)
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5 . 若
、
,且
、
是方程
的两个根,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa210ee8b373cc1be92064e1c0a7f60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f35152720e43c6403d43bef47c0377d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/622a0c803fe483e1c0b57c301ffef829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
A.![]() ![]() | B.![]() ![]() | C.![]() | D.![]() |
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2020-01-23更新
|
621次组卷
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4卷引用:上海市青浦高级中学2016-2017学年高一下学期3月质量检测数学试题
上海市青浦高级中学2016-2017学年高一下学期3月质量检测数学试题(已下线)10.1 两角和与差的三角函数 2020-2021学年高一数学同步课堂帮帮帮(苏教版2019必修第二册)山西省太原市太原师范学院附属中学、师苑中学2021-2022学年高一下学期开学分班数学试题(已下线)第五章 三角函数 专题3 三角函数的给值求角问题-2021-2022学年“高人一筹”之高一数学“痛点”大揭秘(人教A版2019必修第一册)
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6 . 若
、
分别是方程
的两个根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729f3bcad3527fd911eb71de25a64f9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f35152720e43c6403d43bef47c0377d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828765097c682c0b260c81e5bf6229a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b729f3bcad3527fd911eb71de25a64f9.png)
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2020-01-19更新
|
237次组卷
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2卷引用:上海市松江区2016-2017学年高一下学期期末质量监控数学试题
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7 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a12ba8cf669274057a9c06d297cfa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29591e1c9707645880afba07a6eb6f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
您最近一年使用:0次
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8 . 若
且
是第二象限角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
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2019-11-15更新
|
400次组卷
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3卷引用:上海市西南位育中学2019-2020学年高三上学期期中数学试题
2014·上海虹口·二模
9 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1029ae8e4120c872408387aea94a3.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec0574951f0ff5ee10c7aa7fda9a65b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1029ae8e4120c872408387aea94a3.png)
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