名校
解题方法
1 . 计算:
(1)已知
,
,求cosα的值;
(2)化简并求值:
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba553fc637fc7874572a42151a23a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ebeb1d21ea51e993f82f9f83bb7236.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1af090ea7d819afe4a162fc979e6431.png)
您最近一年使用:0次
名校
2 . 计算:
(1)已知α,β都是锐角,
,
,求sinβ的值;
(2)化简并求值:
.
(1)已知α,β都是锐角,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a40cb7958c821d2af477e4b26874377.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1af090ea7d819afe4a162fc979e6431.png)
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名校
解题方法
3 . 化简求值:
(1)已知
都为锐角,
,求
的值;
(2)
.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a35d67e136026dfeceed269762ecbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98aef09f546782179d211bcd37b1ff0.png)
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2022-03-06更新
|
499次组卷
|
2卷引用:黑龙江省双鸭山市第一中学2021-2022学年高一上学期期末数学试题
名校
4 . (1)已知
,
,且
,
,求
的值;
(2)化简并求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f60ed35a7e27ea2af5a98103a6cf89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb4234175c2f92792ab2d298d45df37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f3f98fe3b0457a5792aee216ffc217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164bd33769c7ee7f85798bbca745895c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b04da7eac640b5b735da7fb5da8cfd.png)
(2)化简并求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3d7a5f6c90b981dc21f70d967aa482.png)
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名校
5 . 化简求值:
(1)
;
(2)已知
,求
的值.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c4b8942a566bdf1b6f9c4475484ff31.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93da422f7193a7e66b7787976a8434f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf2783807aec6e30b4c3db8fd18e0fb.png)
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2022-03-17更新
|
598次组卷
|
2卷引用:安徽省淮北一中、安师大附中、铜陵一中、中科大附中四校2021-2022学年高一下学期学业水平调研数学试题
名校
解题方法
6 . 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)
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2020-08-03更新
|
560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)
解题方法
7 . 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)
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解题方法
8 . 设函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036719d5005ad21eca3e3e469c0148d9.png)
(1)讨论函数
的奇偶性,并说明理由;
(2)设
,解关于
的不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1cabea51106c6e9bc2f89f443c8542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036719d5005ad21eca3e3e469c0148d9.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e162d1739982517c1a337606c0e26573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a908ed89530a2f273684e5d014144d.png)
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名校
9 . 已知
三内角A、B、C的对边分别为a、b、c,且
.
(1)求角A的值;
(2)在解三角形问题中,若
,且
有两解,求边a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebeb4a59fdc96e3c7bfb081742da493d.png)
(1)求角A的值;
(2)在解三角形问题中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022-05-13更新
|
927次组卷
|
2卷引用:湖南省怀化市2022届高三下学期一模数学试题
解题方法
10 . 已知
,设函数
.
(1)若f(x)是偶函数,求
的取值集合;
(2)若方程
有实数解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97849a9f9376911ec283c62e23ebaf62.png)
(1)若f(x)是偶函数,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16134efebed5fce3f03a43fde1e1ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4d6b541c297830ba5191bf4521465b.png)
您最近一年使用:0次