20-21高一·全国·课后作业
解题方法
1 . 已知
,
.
(1)求
的值;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70512172433e96ff710dd67a23faf286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40553ae3056af82bcaf1fb8923337f09.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/affef976aac53a7783108bd132cef3c0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175c73225fb453814c489638d6ef33bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
您最近一年使用:0次
解题方法
2 . (1)已知
,
,求
的值;
(2)已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c3d16720426ef0a8e734ac5d314e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6bcba6144901c94bf728c3bf89eddd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db9bff61ea982def4f236f992f34b38.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c94a0f8976c1cc8f00b4e37a8ed4db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315be5c631dd2de45746e658c819616a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d521f8d021b20757d7a68107fcef1d.png)
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2021-02-06更新
|
2327次组卷
|
5卷引用:人教A版(2019) 必修第一册 逆袭之路 第五章 三角函数 小结
名校
3 . 已知向量
,
,
.
(1)求
的值.
(2)若
,
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afb2a6ac6bb1cb11445577dd97e0fa30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5109992a5bf54faa23355741beb74959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fce52efa3c930f6aca8c305a7853c331.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb006ea697b63a914eb487073f0abe1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65b6c42393fae47c51101713167ff71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8d88054c08b24133a1bb1c86f1ceab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77c702d255158e9b4429cd6aab850f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
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2021-02-06更新
|
1194次组卷
|
8卷引用:江西省南昌市第十中学2020-2021学年高一上学期期末考试数学试题
名校
解题方法
4 . 在
中,角
,
,
的对边分别为
,
,
,已知
.
(Ⅰ)求
的值;
(Ⅱ)在①
,②
,③
这三个条件中任选一个,补充在下列问题中,并解决问题.若
,_______,求
的周长.
![](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/bd5d01393a34ecf31af1b0f02304a3a7.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(Ⅱ)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d1eac105dd2a8f46addffecb0d8a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f85678de64dcc06b3efcdb6a127170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8242f3a6a00149f6211bfce2dfc5c4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-02-04更新
|
1063次组卷
|
9卷引用:一轮复习大题专练20—解三角形(周长问题)-2022届高三数学一轮复习
(已下线)一轮复习大题专练20—解三角形(周长问题)-2022届高三数学一轮复习重庆市南华中学校2021-2022学年高二上学期10月月考数学试题江苏省苏州市八校2020-2021学年高三上学期期末联考数学试题江苏省盐城中学2021届高三下学期一模模拟练习一数学试题浙江省湖州市安吉县2020-2021学年高一下学期期末数学试题云南省曲靖市罗平县第二中学2020-2021学年高一3月月考数学试题福建省厦门市第三中学2021-2022学年高一下学期期中考试数学试题浙江省温州市乐清市知临中学2021-2022学年高二下学期期中数学试题湖南省常德市第一中学2023-2024学年高一下学期第一次月考数学试题
2020·全国·模拟预测
解题方法
5 . 已知在
中,
.
(1)求角
;
(2)若
为
边上靠近点
的三等分点,且
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becadd2751d1cfda51f466136216a9e5.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bae651529e60da7d1de9c997206cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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20-21高一·全国·课后作业
6 . (1)化简:
.
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83faf1206bbb2505f2513f582f3917e1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeacad6112a2194d36c7cba3059d3b39.png)
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20-21高一·全国·课后作业
解题方法
7 . 化简下列各式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48344dd67bb19f9ec59ba1541babb05.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201e3bf2d10ddf282cc4001c0e921ef.png)
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名校
8 . 已知函数
,
.
(1)若
,求函数
的单调递减区间;
(2)若把
向右平移
个单位,图像上各点的横坐标缩短为原来的一半,得到函数
,求
在区间
上的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fadbe821a59032b9887f53ce70c704e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58119f48aa8860923d1f13dd78a17c62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae51e123a6f971810000cf4473138c6f.png)
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2011·北京顺义·一模
名校
解题方法
9 . 已知角
的顶点在坐标原点,始边与
轴的正半轴重合,终边经过点
.
(1)求
的值;
(2)若函数
,求函数
在区间
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87097df58a73ff52e0e8deed9630f3e4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80c2c72eed7998a1961c49908d73a00.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a17de841a8112b655b3d0854aa9fd9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/504aa02847b3afdb410dab1fc92f9985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd81e5bf83113d3c2d086d1db9ab1a80.png)
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2020-10-03更新
|
360次组卷
|
12卷引用:2012届北京市顺义区高三尖子生综合素质展示数学
(已下线)2012届北京市顺义区高三尖子生综合素质展示数学(已下线)2014届陕西西安长安区一中高三上学期第三次检测文科数学试卷(已下线)专题4.2 简单的三角恒等变换-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破(已下线)专题4.5 三角恒等变换(精练)-2021年高考数学(理)一轮复习学与练湖南师范大学第二附属中学培训部2021届高三下学期入学考试数学试题重庆市巴蜀中学2021届高三下学期第一次诊断性测试数学试题3.1二倍角公式课后习题2020-2021学年高一数学北师大版(2019)必修第二册第四章 3.1二倍角公式-北师大版(2019)高中数学必修第二册人教A版(2019) 必修第一册 数学奇书 学业评价(五十二)简单的三角恒等变换(二)(已下线)2012届浙江省三校高三联考理科数学2016-2017学年安徽省安庆市高一上学期期末考试数学试卷湖南省邵阳市邵东创新实验学校2020-2021学年高三上学期10月月考数学试题
2020高三·全国·专题练习
10 . 将下列三角函数解析式化为y=Asin(ωx+φ)+m的形式.
(1)f(x)=2cos
(
sin
+cos
)-1;
(2)f(x)=2
cos(x+
)cos(x-
)+2
sinxcosx.
(1)f(x)=2cos
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1020afcfd8b7de38dfd825373b86bdea.png)
(2)f(x)=2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
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