名校
1 . (1)化简求值:
;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4947ab0e3b3eaa7a3d0d16b38e6cd582.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3739f2cddb3045d7d39d1f88a2f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac767b538138b81695e2636177f5dc14.png)
您最近一年使用:0次
2 . 已知定义在区间
上的函数
的图象关于直线
对称,当
时,函数
,其图象如图所示.
![](https://img.xkw.com/dksih/QBM/2018/5/3/1937521359077376/1940853338193920/STEM/e457025b9e68437d8c64d1bf7a2fc3b2.png?resizew=269)
(1)求函数
在
的表达式;
(2)求方程
解的集合;
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bd22c81eaddc6a01fb53db884c97c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d729d4e273ddcbb1a1b7ec3f152c2b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d874b63c99d340dc01dc91f2a3e90570.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff52e7c43e535e548505c03d47f8f9e.png)
![](https://img.xkw.com/dksih/QBM/2018/5/3/1937521359077376/1940853338193920/STEM/e457025b9e68437d8c64d1bf7a2fc3b2.png?resizew=269)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bd22c81eaddc6a01fb53db884c97c2.png)
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a5ccb32601d98986679e94ab280cdb.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98c0296c6ac48e3bbae5639e6e7714c.png)
您最近一年使用:0次
名校
3 . 已知定义在区间
上的函数
的图象关于直线
对称,当
时,函数
,其图象如图所示.
(1)求函数
在
的表达式;
(2)求方程
解的集合;
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8365e89401b73d772c9ed6774ee89c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c54f212fc8b30b78c3c9913081f8389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3a2cdee834f5e531b86c6952563da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bef73ca1b6f01b626aa1ae548a46fed.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8365e89401b73d772c9ed6774ee89c.png)
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/163cd29378e14329483bf356831e858e.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f10959f09fd10b1f93155538eba94b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/16/c15cae9a-cfdc-48d9-b252-c2399d274994.png?resizew=318)
您最近一年使用:0次
2018-06-01更新
|
506次组卷
|
2卷引用:【全国百强校】吉林省吉化第一高级中学校 2017-2018学年高一下学期期中考试数学试题
名校
解题方法
4 . (1)化简求值:
;
(2)已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddf31383a0e96641232fd75ae144b82.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60766b0c3705ffe3e62fe42931022617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8513ff2a7ecf0ca7b5848528be217e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fc611dd495a459c93f925afbd2bf9d.png)
您最近一年使用:0次
名校
解题方法
5 . 已知角
且
.求下列各式的值.
(1)求
的值;
(2)先化简
,再求值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281805b9dfe2162215dfe6b5ad6d7b03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccbd5e353e66d6fce327074f9e4e94b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ff6bf256973c7153aa8ea58d3db69e.png)
(2)先化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d65debf66495cfa5337501c459392d5.png)
您最近一年使用:0次
2020-08-03更新
|
561次组卷
|
3卷引用:黑龙江省大庆市东风中学2021-2022学年高一下学期期中考试数学试题
黑龙江省大庆市东风中学2021-2022学年高一下学期期中考试数学试题河南省开封市五县联考2019-2020学年高一下学期期末考试数学试题(已下线)专题5.4三角恒等变换(A卷基础篇)-2020-2021学年高一数学必修第一册同步单元AB卷(新教材人教A版,浙江专用)
6 . 如图所示,在山顶
点已测得
,
,
的俯角分别为
,
,
,其中
,
,
为山脚两侧共线的三点,现欲沿直线
开通穿山隧道,为了求出隧道
的长,至少还需要直接测量出
,
,
中的哪些线段长?把你上一问指出的需要测量得线段长和已测得的角度作为已知量,写出计算隧道
的步骤.
![](https://img.xkw.com/dksih/QBM/2018/3/14/1901794656919552/1906225170636800/STEM/74f2b76b703b488ab486b9d8e543099f.png?resizew=304)
解:
步骤
:还需要直接测量得线段为.
步骤
:计算线段.
计算步骤:
步骤
:计算线段
计算步骤:
步骤
:计算线段
计算步骤:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/2018/3/14/1901794656919552/1906225170636800/STEM/74f2b76b703b488ab486b9d8e543099f.png?resizew=304)
解:
步骤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
步骤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
计算步骤:
步骤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
计算步骤:
步骤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
计算步骤:
您最近一年使用:0次
解题方法
7 . 计算:
(1)求值
;
(2)已知
,
,求
的值
(1)求值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c993d3d8b2843b466214ec8277e5eb1e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ffc29f5c08858ee01e8a97ecc07c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136de78eaaf3c53562e477412b8492f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
您最近一年使用:0次
2023-01-28更新
|
451次组卷
|
8卷引用:模块三 专题4 大题分类练(三角恒等变换)(苏教版)
(已下线)模块三 专题4 大题分类练(三角恒等变换)(苏教版)(已下线)模块三 专题4 大题分类练(三角恒等变换)【人教B版】江苏省常州市教科院附属高级中学2022-2023学年高一上学期期末模拟数学试题A卷(已下线)专题04 二倍角的三角函数-期中期末考点大串讲(苏教版2019必修第二册)(已下线)模块三 专题7 大题分类练(三角恒等变换)拔高能力练(北师大版)(已下线)模块三 专题5 大题分类练(三角恒等变换)拔高能力练(苏教版)(已下线)5.5.2简单的三角恒等变换(第2课时)(已下线)专题02 三角恒等变换(1)-期末考点大串讲(苏教版(2019))
解题方法
8 . 计算求值:
(1)计算
的值;
(2)已知
、
均为锐角,
,
,求
的值.
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a497cfa130c80a1c93a49f80ea7aaa83.png)
(2)已知
![](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/76b9189638705753a50b5dc1c6ef54ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c740e41a3ad0345cc45155d1c2eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fe57d4fbae536de2e641d9d349fcf1.png)
您最近一年使用:0次
9 . 已知
.
(Ⅰ)求
的值;
(Ⅱ)若
是第二象限的角,化简三角式
,并求值.
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939183210496/1572939189100544/STEM/d529619af2354a93bc8852db6f9321dd.png)
(Ⅰ)求
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939183210496/1572939189100544/STEM/6e62016428644e52acc166e82e73f3f9.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939183210496/1572939189100544/STEM/9d8a5e16ee854b28b872f322cd37abb1.png)
![](https://img.xkw.com/dksih/QBM/2016/7/22/1572939183210496/1572939189100544/STEM/d8ef59e6948341b4816f61d1cb28dc87.png)
您最近一年使用:0次
10 . (1)化简:
;
(2)求值:若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4d5f43d22443e100b8165aad0e350c.png)
(2)求值:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c65c95a93046f363c82fc43a62060a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482f686f238427fa04db956d2911be0f.png)
您最近一年使用:0次