名校
解题方法
1 . 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
|
560次组卷
|
3卷引用: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
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)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
解题方法
2 . 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
名校
解题方法
3 . 在
中,角A,B,C所对的边分别为a,b,c,已知
.
(1)求角B的大小;
(2)若
,
,解这个三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d72572a2c48448b456f6d5770ca6f9.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f557c2253c3d2a651e86c3895c861251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
您最近一年使用:0次
2023-03-26更新
|
992次组卷
|
2卷引用:天津市西青区张家窝中学2022-2023学年高一下学期3月月考数学试题
4 . 在
中,内角
、
、
的对边分别为
、
、
,且
,
.
(1)若
,求
;
(2)若
,解这个三角形.
![](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/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09921d9904335a83078262ce62a473.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058958067e67058f3342b26b2406f832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3578b63c5903089595bf324c809a997c.png)
您最近一年使用:0次
名校
解题方法
5 . 函数
的部分图象如图所示,点A,B,C在图象
上,
,
,并且
轴
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/766de769-0f32-4231-af06-52c840282914.png?resizew=183)
(1)求
和
的值及点B的坐标;
(2)若
,且
,求
的值;
(3)将函数
的图象上各点的纵坐标变为原来的
倍,横坐标不变,再将所得图象各点的横坐标变为原来的
倍,纵坐标不变,最后将所得图象向右平移
个单位,得到
的图象,若关于x的方程
在区间
上有两个不同解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7fadf46cb683071e67931e6186ec9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f69238008204e283e24426fa3ba1fc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813a938b3d6da4801995362686ab4c4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa16d8ca4637c8103fe3844b9338d68.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/766de769-0f32-4231-af06-52c840282914.png?resizew=183)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe552027858fc6b675f2e68c55bf58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4352dfe95446ab24b2c5aba37a13b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74560d0ad6985fd4bf5580df33f96f84.png)
(3)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a8b76e36783a69d14ec54af82c7df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc1d7ad8216fa41c46ca8bd777b0af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1613d377a07850c72cbec354b7a3000f.png)
您最近一年使用:0次
2020-02-20更新
|
308次组卷
|
2卷引用:湖南省衡阳市第一中学2018-2019学年高一下学期期中数学试题