解题方法
1 . 已知
,
为第二象限角,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639b10935a7b02ed74d4007dc89f2962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dca8cffd864128af5a6cc6ff4c6f6b8.png)
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2023-10-09更新
|
183次组卷
|
3卷引用:北师大版(2019)必修第二册课本习题第四章§2两角和与差的三角函数公式
2 . 已知
,
,且角
,
分别位于第二、四象限,求
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e4fc7489911b0da3cc5d7194d9c6a0.png)
![](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/cc3884b343d76a26b4b85b48987d7064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb006ea697b63a914eb487073f0abe1.png)
您最近一年使用:0次
名校
3 . 已知
,
,
,
是第三象限角,求
,
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969b106918cf44777d177a0538da8cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0eef742bb017d3f68c742255579cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5102123bba12cae29e5ebe8b147e0747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258f7dd295360a0fa22a811dcffa3ac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d521f8d021b20757d7a68107fcef1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
您最近一年使用:0次
2023-06-12更新
|
992次组卷
|
3卷引用:黑龙江省哈尔滨市南岗区第三十二中学校2022-2023学年高一下学期期中数学试题
黑龙江省哈尔滨市南岗区第三十二中学校2022-2023学年高一下学期期中数学试题第五章 三角函数 (单元测)(已下线)第08讲 5.5.1两角和与差的正弦、余弦和正切公式(第1课时)(1)-【帮课堂】
4 . 已知
,
,且
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae856a5db517275b60b7b75bbb575d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe338d9bb3657fa605427455785f8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1c17a53981687048cb4906307f8b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f6eca9a9cda6e3f85f5f4d2f121e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e53d0b06e3fb0338bf97042e677a23.png)
您最近一年使用:0次
5 . 已知
,
,α、β均为第二象限角,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf24ce696b370121c4fbc928e3694943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e57e22b4524d25c74497c916baf0f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d521f8d021b20757d7a68107fcef1d.png)
您最近一年使用:0次
解题方法
6 . 已知角
的顶点与原点
重合,始边与
轴的正半轴重合,它的终边过点
.
(1)求
的值;
(2)若角
满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c111a7b669770a2cc28e403ade76169.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa26d96d02b0ea596a0c3357ae27fa0.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577fd4d79427834eecacba91aa1e7afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
7 . 已知
,
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529d3ae88b31e2436ee24f44362cdd3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbe8b4bcd32e5a64ebfd873f8cbb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c8730262dbda445dffe5e8d72bc1079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3082a465471094b8bef0240fd01f6436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3884b343d76a26b4b85b48987d7064.png)
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21-22高一·湖南·课后作业
解题方法
8 . 已知函数f(x)=2cos
(其中ω>0,x∈R)的最小正周期为10π.
(1)求ω的值;
(2)设α,β∈
,f
=
,f
=
,求cos(α-β)的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9075f78845df444964dfb21538c4b00c.png)
(1)求ω的值;
(2)设α,β∈
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceba54c042e227b842c8f85628267c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e9eb60fbfaf2f348a23907b3521173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb795cd13970a268312867db9a8d91e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f070183292219bf90dc40ace1ccddac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de96ae967edd54e713906e44b51840b.png)
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21-22高一·湖南·课后作业
解题方法
9 . 已知
为锐角,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fcc92d72e6eeff26065a3bfa98e4aa.png)
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20-21高一·全国·课后作业
10 . 已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d450aea0fb89e956fc4caa3a9c59fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201f6e84279e80b85f394f4d930ed41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55726866af15579b678a89c463eb3988.png)
您最近一年使用:0次