名校
解题方法
1 . 在
中,角A,B,C的对边分别是a,b,c,已知
,向量
,
,且
.
(1)求角A的大小;
(2)若点D为边BC上靠近B的四等分点,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1af98f1fb74e141fe4652c337f27bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b103b4c5d20c87e91e70696da97d60c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9adb96dc022421fe12a856835ca728b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c18a8a8067b87c4880691064bf8182.png)
(1)求角A的大小;
(2)若点D为边BC上靠近B的四等分点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b9503381acb85f0c64f39be87bc178b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-10-24更新
|
544次组卷
|
7卷引用:吉林省吉林市普通中学2020-2021学年度高三上学期第二次调研测试理科数学试题
吉林省吉林市普通中学2020-2021学年度高三上学期第二次调研测试理科数学试题吉林省吉林市普通中学2020-2021学年高三上学期毕业班第二次调研测试文科数学试题2020届江苏省百校高三下学期5月第五次联考数学试题江苏省南京市第一中学2023-2024学年高三上学期8月月考数学试题黑龙江省齐齐哈尔市普高联谊校2024届高三上学期第三次月考数学试题(已下线)预测06 平面向量-【临门一脚】2020年高考数学三轮冲刺过关(江苏专用)(已下线)预测05 三角函数与解三角形-【临门一脚】2020年高考数学三轮冲刺过关(江苏专用)
名校
解题方法
2 . 已知函数
(
,
,
)同时满足下列四个条件中的三个:①
的图象经过点
,②
的最小正周期与
的最小正周期相同,③
的图象关于直线
对称,④
.
(1)求
的解析式;
(2)若函数
,当
时,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af87a22a39bd12c4734b0bdf1596b42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ab72a3ecd55db6b3d0a73ccb1dd59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2e37b78bc3b12cdf9d98b4d4f2620b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2a01276f177b926f8800f9ae8f93d8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8808d10b42410ea46c9138ce3b2b0fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8fa4cd0822ad07ef0d2af24428ab9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
名校
解题方法
3 . 在
中,角A,B,C的对边分别为a,b,c,且
.
(1)求角A;
(2)若
,点D是BC的中点,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6305251e80931f672a32b2fe81eedf26.png)
(1)求角A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8607bde1fa6cde631a46e921d959a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b9503381acb85f0c64f39be87bc178b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4702a4a30e58cf37c7b2990b87e281.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a7de5b70003502e40b95b3b7d3d933.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d325e280e2faa976dd3c877c7922c61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4702a4a30e58cf37c7b2990b87e281.png)
您最近一年使用:0次
名校
解题方法
5 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241f210a14d775245dedc2f63ff6593d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4797e301b514026abc02f0e42f29d124.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2022-12-17更新
|
841次组卷
|
3卷引用:吉林省四平市第一高级中学2021-2022学年高三上学期第一次月考数学(文)试题
名校
6 . 已知点
为角
终边上一点,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b43444645126ee8142078723f10381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b66c9db64497e6d930f6e2224c9d639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96da8df7636806777e9efa1768a5276d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
2022高三·全国·专题练习
名校
解题方法
7 . 曲线
在
处的切线的倾斜角为α,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3038cc6e4e4ee3a0b53f44fd2e249d67.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d345952d1c0b61077054d32aaf87776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3038cc6e4e4ee3a0b53f44fd2e249d67.png)
您最近一年使用:0次
2021-09-28更新
|
568次组卷
|
4卷引用:吉林省实验中学2021-2022学年上学期高三第三次学科诊断测试数学(理)试题
吉林省实验中学2021-2022学年上学期高三第三次学科诊断测试数学(理)试题江西省抚州市临川第一中学2021-2022高二12月月考数学(文)试题江西省抚州市金溪县第一中学2023届高三上学期第二次月考数学(理)试题(已下线)专题3.1 导数的概念及运算-重难点题型精讲-2022年高考数学一轮复习举一反三系列(新高考地区专用)
8 . 如图,在平面四边形
中,已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025a8560773ce87a476eff221c54b1cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/65a3a7fd-5c6e-4ea0-a74c-bc866478fbae.png?resizew=137)
(1)若
平分
,且
,求
的长
(2)若
,求
的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025a8560773ce87a476eff221c54b1cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/65a3a7fd-5c6e-4ea0-a74c-bc866478fbae.png?resizew=137)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62eccb33ea66c03222468628f74d8c56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc7f54acef4e40aad465ffe5f8b4b22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2021-07-31更新
|
1114次组卷
|
4卷引用:吉林省长春市十一高中2022届高三上学期第一学程考试数学(理)试题
吉林省长春市十一高中2022届高三上学期第一学程考试数学(理)试题江苏省兴化市、泗阳县2021-2022学年高三上学期12月教学效果测试数学试题江西省赣州市赣县第三中学2022届高三上学期期中适应考试数学(理)试题(已下线)专题6.5 解三角形大题(角平分线问题)-2022届高三数学一轮复习精讲精练
名校
解题方法
9 . a,b,c分别为钝角
内角A,B,C的对边.已知
.
(1)求
;
(2)若
,
,求c的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b34c8006a308f73a466036201cefc206.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a162b0f7902e6cb806f0b9183e05815.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b2139fd92090785e08fbdf814c41f8.png)
您最近一年使用:0次
2021-11-26更新
|
701次组卷
|
8卷引用:吉林省四平市第一高级中学2021-2022学年高三上学期第三次月考数学(文)试题
解题方法
10 . 若
,
均为锐角,
,
,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/c9330f5a1902fe99fc5edd744fbe9146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f62cb0a85d71f431a61db26ce2003b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6834a22cc57e6dc022c74eae7dac76.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
您最近一年使用:0次
2021-11-26更新
|
802次组卷
|
4卷引用:吉林省东北师范大学附属中学2021-2022学年高三上学期第二次摸底考试文科数学试题
吉林省东北师范大学附属中学2021-2022学年高三上学期第二次摸底考试文科数学试题(已下线)【课时作业】第3课时 两角和与差的正弦、余弦、正切公式的应用-2021-2022学年高一数学《新教材同步精典导学案》(人教A版2019必修第一册)(已下线)第16节 三角恒等变换苏教版(2019) 必修第二册 必杀技 第10章 三角恒等变换 10.1 两角和与差的三角函数 10.1.2 两角和与差的正弦