1 . 在平面直角坐标系
中,已知角
的终边经过点
,其中
.
(1)求
的值;
(2)若
为第二象限角,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff349afa884ad65a0ae3996159a4e6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d0bc1ad3d526ecf573a4f85737e8872.png)
您最近一年使用:0次
名校
解题方法
2 . 已知
.
(1)化简
;
(2)若
均为锐角,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85acef6b65ddb7d0ad8d033c4e7d51a1.png)
(1)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20cef5934e62488e48b0d0e0ae36a6ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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2024-01-31更新
|
618次组卷
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4卷引用:安徽省阜阳市2023-2024学年高一上学期期末联考数学试卷
安徽省阜阳市2023-2024学年高一上学期期末联考数学试卷河南省名校联盟2023-2024学年高一上学期期末数学试题广东省茂名市高州市第一中学2023-2024学年高一下学期开学考试数学试题(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)
解题方法
3 . 已知
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda318adf65c6b6fd45f651365f52346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7f59e7ad7bcc2d1cdd9aa4d2f99b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/005fa32731cd8290847a115f78b42efa.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
4 . 已知
,其中
且
,则下列结论一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91818825cc97da5e5039be2d1a02c92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d9f4b68d0155117c9e6c1324cffba9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77446b67552b43464d8d9ad024fef5ae.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2024-01-22更新
|
466次组卷
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5卷引用:广东省清远市2023-2024学年高一上学期期末教学质量检测数学试卷
广东省清远市2023-2024学年高一上学期期末教学质量检测数学试卷广东省汕头市潮阳实验学校2024届高三上学期联合模拟考试(二)数学试题(已下线)第10章 三角恒等变换单元综合能力测试卷-【帮课堂】(苏教版2019必修第二册)(已下线)专题08 两角和与差的三角函数-《重难点题型·高分突破》(苏教版2019必修第二册)(已下线)专题04三角恒等变换期末6种常考题型归类-《期末真题分类汇编》(人教B版2019必修第三册)
名校
解题方法
5 . 如图,在平面直角坐标系
中,锐角
的始边与
轴的非负半轴重合,终边与单位圆交于点
,过
作单位圆
的切线
,
与
轴和
轴分别交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/f791ea6e-f4fe-4a49-badb-45f905c797e6.png?resizew=178)
(1)若
,求
的周长;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c79cb356e8ab24c1ddf0d34e33c3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1373cac5902cee3fb6021c7c2a18f4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/f791ea6e-f4fe-4a49-badb-45f905c797e6.png?resizew=178)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce39a7daf268f5be4608006f41f2308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249d6fad7f9244ae86ec2e13e52acba9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417eb45bb82ea50930bf84e2904fd467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249d6fad7f9244ae86ec2e13e52acba9.png)
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2024-01-18更新
|
367次组卷
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2卷引用:江苏省苏州市2023-2024学年高一上学期1月学业质量阳光指标调研数学试卷
解题方法
6 . 如图,在
中,
,
,
,
为
内的一点,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932979fbd93c8f58f804a448d4a4983c.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5064f5ce5ac8428e277fd578da84ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932979fbd93c8f58f804a448d4a4983c.png)
您最近一年使用:0次
7 . 下列各式中不成立的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知关于
的方程
的两个根分别为
和
,且
.
(1)求
的值;
(2)求
的值;
(3)求方程的两根及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab969c598743065bb0369fee4e846929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25104a0f6ae94a86bf4dea610e1a9710.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3ec79debb02f3798baab1e9d89e528.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)求方程的两根及
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2024-01-05更新
|
653次组卷
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5卷引用:湖北省咸宁市崇阳县第二高级中学2023-2024学年高一上学期数学模拟考试试题(一)
湖北省咸宁市崇阳县第二高级中学2023-2024学年高一上学期数学模拟考试试题(一)(已下线)【第三课】5.2.2同角三角函数的基本关系(已下线)专题07 三角函数的概念与诱导公式(2)-【寒假自学课】(苏教版2019)(已下线)7.2.3 同角三角函数的基本关系式-【帮课堂】(人教B版2019必修第三册)广西百色市平果市铝城中学2023-2024学年高一下学期4月月考测试数学试卷
名校
解题方法
9 . 已知
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3744ee15af01a8e7c0f126edb5f68132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9f1f872a4208a7f21dedcc50127619.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-12-22更新
|
1573次组卷
|
6卷引用:海南省乐东县华东师大二附中黄流中学2023-2024学年高一上学期12月月考数学试题
海南省乐东县华东师大二附中黄流中学2023-2024学年高一上学期12月月考数学试题福建省厦门市厦门大学附属科技中学2023-2024高一上学期12月阶段测试数学试题(已下线)第7章:三角函数章末综合检测卷-【题型分类归纳】(苏教版2019必修第一册)(已下线)专题07 任意角、弧度制、三角函数概念及诱导公式1-期末复习重难培优与单元检测(人教A版2019)山东省临沂市沂水县第一中学2023-2024学年高一上学期期末模拟数学试题(二)(已下线)高一上学期期末数学考试模拟卷-【题型分类归纳】(人教A版2019必修第一册)
解题方法
10 . 记
的三个内角分别为
,
,
.其对边分别为
,
,
,若
,
的面积为
.
(1)求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faef87744ed2a4d51009b0d52c360cbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03005d17bf564371ad29fea41f5c650.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2526197224eea5878e62d46952cd669.png)
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2023-12-13更新
|
1040次组卷
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4卷引用:四川省达州市普通高中2024届第一次诊断性测试数学(文科)试题