名校
解题方法
1 . 在
中,内角A,B,C的对边分别是a,b,c,且满足
.
(1)求角B;
(2)若
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18f4e1a24fc4a8672e39bfdf5e2e1af.png)
(1)求角B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-09-27更新
|
1068次组卷
|
4卷引用:湘桂黔名校2022-2023学年高二下学期大联考数学试题
解题方法
2 . (1)求值:
.
(2)已知
,
,且
,求角
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1ce56f8d639b2207d6b001155b7013.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b1670b2b446ace5bc12d7385b8e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57276c4d551ab2b1b5f8852d45697d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed53925cace8212e87a4d3bad6463718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
名校
3 . 已知
.
(1)若
,且
,
,求
的值;
(2)若函数
在区间
上没有零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d169e7a647c6356f2638d50500a9255e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dcee772e6187ac31d7f8d69b0487000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4a2d4abde2a46df1f8e678ead23ef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201f6e84279e80b85f394f4d930ed41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f88d80d4a4f5600f027898626ba857.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a6d96ddd134acea2e07887b8eb707b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a987feb9df03831a505b0015fc5536a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次
2023-09-13更新
|
517次组卷
|
3卷引用:山东省威海市乳山市银滩高级中学2023-2024学年高三上学期9月月考数学试题
山东省威海市乳山市银滩高级中学2023-2024学年高三上学期9月月考数学试题(已下线)第02讲 5.4三角函数的图象和性质—【练透核心考点】安徽省皖江名校2023-2024学年高二上学期开学联考数学试题
名校
4 . 我国人脸识别技术处于世界领先地位.所谓人脸识别,就是利用计算机检测样本之间的相似度,余弦距离是检测相似度的常用方法.假设二维空间中有两个点
,
,O为坐标原点,余弦相似度为向量
,
夹角的余弦值,记作
,余弦距离为
.已知
,
,
,若P,Q的余弦距离为
,
,则Q,R的余弦距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1df320d266e857a428ff0bac1eb680bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef2376fa0549e6fae46bae54d6ace942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926778fe15991308849cdba1822595a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1b00c13a8bb6db096dd866a2c37dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b20bb38fbd8ff8e5f8e985a0babf498d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb68696d2da8cc8a32011148b831de4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-09-07更新
|
712次组卷
|
6卷引用:新疆乌鲁木齐市第一中学2024届高三上学期第二次月考数学试题
新疆乌鲁木齐市第一中学2024届高三上学期第二次月考数学试题(已下线)第13讲 拓展一:平面向量综合问题-【帮课堂】(人教A版2019必修第二册)广东省广州市广东实验中学2023-2024学年高三下学期教学情况测试(二)数学试卷A江苏省苏州市2024届高三上学期期初调研考试数学试题广东省深圳市宝安区2024届高三上学期10月调研数学试题(已下线)黄金卷01(理科)
解题方法
5 . 已知函数
.
(1)利用“五点法”,完成如下表格,并画出函数
在一个周期上的图象;
(2)若
且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd6dd6ff7442ffdd49ae72d99a76f4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/7/c80db8ee-6701-4031-8634-f7c18aeec9ac.png?resizew=183)
(1)利用“五点法”,完成如下表格,并画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![]() | _____ | _____ | _____ | _____ | _____ |
x | _____ | _____ | _____ | _____ | _____ |
![]() | _____ | _____ | _____ | _____ | _____ |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612fd36aeb83099c4644c076db691612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8289af4a977f6e40f772cabbf3ed9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
您最近一年使用:0次
名校
解题方法
6 . 已知
,
均为锐角,且
,
,则
( )
![](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/536e072eb0439a5e5b430cd55a129374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b30ef3b0b5e851dc721fedec7335a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6834a22cc57e6dc022c74eae7dac76.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
2023-08-27更新
|
1209次组卷
|
3卷引用:河南省洛阳市洛宁县第一高级中学2023-2024学年高三上学期第一次月考数学试题
解题方法
7 . 已知函数
.
(1)试问曲线
经过怎样的变换可以得到曲线
?
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1292f10249609de4b24419588b6ccc32.png)
(1)试问曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80e8d2d66b432fd2b8a2830ba21e5dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024360a85f10da0c8f02d4960d4abf4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf089c4c25406ab9350373f6177b640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ee744db4c3351614c5604829f82e87.png)
您最近一年使用:0次
解题方法
8 . 已知
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2570f629ab53627825b55a4f7f14ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258f7dd295360a0fa22a811dcffa3ac1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-08更新
|
824次组卷
|
4卷引用:专题24 新高考数学模拟卷(一)
(已下线)专题24 新高考数学模拟卷(一)(已下线)专题4.1 同角三角函数关系式、诱导公式与三角恒等变换【八大题型】湖北省仙桃市田家炳实验高级中学2022-2023学年高一下学期期中数学试题贵州省六盘水市第四中学2023-2024学年高一下学期第一次月考数学试卷
名校
解题方法
9 . 已知
,
,
,
.
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbe8b4bcd32e5a64ebfd873f8cbb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be2e0a0816bc26d430622d24909ef97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a077ceccea768ed3c664d38d55242fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fe19e8725a3c1689007b0ada3af643.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29ff2aeae28765cf5a348aef4e506b6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
2023-08-06更新
|
355次组卷
|
3卷引用:黑龙江省哈尔滨市第十三中学校2023-2024学年高三上学期10月月考数学试题
解题方法
10 . (1)证明:;
![](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/ef582149603970540b13e6a6e5d58435.png)
(ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fca31088ca7d4606d8e1954d71185da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-08-02更新
|
266次组卷
|
2卷引用:山东省威海市2022-2023学年高一下学期期末数学试题