名校
解题方法
1 . 已知
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca2fcfab1aa3a97675b7c6c628997d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f43e39f6adc8a9708b4aeeea69136d8a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-11-14更新
|
1132次组卷
|
3卷引用:江苏省南通市如皋中学2022-2023学年高三下学期4月阶段测试数学试题
解题方法
2 . 已知
,
.
(1)求
的值;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0b348a0d615e10c96af95c10baf88e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/730e3e38c91f4443d01d38138a1d80b2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8cdbb75f286bbddb6a396bfcc6bbe7c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a046fc0bef973d197828a94cbaf3d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/770954508e64cd72b8d9944cd1f853bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf18c9bef6794e65a552a12abb03152.png)
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2022-10-22更新
|
794次组卷
|
4卷引用:云南省丽江市2023届高三第一次数学模拟统测试题
名校
3 . 将函数
图象上所有点的横坐标变为原来的
,再向左平移
个单位长度,得到函数
的图象,若对任意的
,均有
成立,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe0005c4bd1e68415d9316b187766d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4145ac17697bc0f91225af690eeeff0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4adf8fa9f6cc4da5f2657a9983f0ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-10-14更新
|
757次组卷
|
3卷引用:江西省萍乡市芦溪中学2023届高三第一次模拟数学(理)试题
解题方法
4 . 函数
图象的对称轴方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ace8c9c5469ccc09a46e9370a42bac.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-09-29更新
|
475次组卷
|
2卷引用:陕西省安康市2021届高三下学期第三次教学质量联考文科数学试题
名校
5 . “寸影千里”法是《周髀算经》中记载的一种远距离测量的估算方法,其具体方法是在同一天(如夏至)的正午,于两地分别竖起同高的标杆,然后测量标杆的影长,并根据“日影差一寸,实地相距千里”的原则推算两地距离.如图,某人在夏至的正午分别在同一水平面上的A,B两地竖起高度均为a寸的标杆
与
,
与
分别为标杆
与
在地面的影长,再按影长
与
的差结合“寸影千里”来推算A,B两地的距离.记
,则按照“寸影千里”的原则,A,B两地的距离大约为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dced6304ee490426f7bbba0f7a94e04f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022-09-28更新
|
730次组卷
|
8卷引用:宁夏银川市第二中学2023届高三模拟数学(理)试题
宁夏银川市第二中学2023届高三模拟数学(理)试题宁夏银川市第二中学2023届高三模拟数学(文)试题江西省鹰潭市2023届高三二模数学试题(理科)江西省“红色十校”2023届高三上学期第一联考数学(文)试题江西省“红色十校”2023届高三上学期第一联考数学(理)试题(已下线)专题5.7 三角函数的应用(4类必考点)-2022-2023学年高一数学必考点分类集训系列(人教A版2019必修第一册)(已下线)专题05三角函数与解三角形(选填)(已下线)北京市中国人民大学附属中学2023-2024学年高一下学期期中练习数学试题变式题16-20
解题方法
6 . 如图,在凸四边形
中,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/40256018-9f79-4a17-a16e-6c87df969822.png?resizew=151)
(1)若
,求
的值;
(2)若
,四边形
的面积为4,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f8af5529fa17b8ebc84d8eabbf4ff27.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/40256018-9f79-4a17-a16e-6c87df969822.png?resizew=151)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc71632f8e22420045ac489415be1f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32b49530dac385216300ab53ebf82450.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3538779698a3da5b1608b29f73b2c412.png)
您最近一年使用:0次
名校
解题方法
7 . 已知
的内角A,B,C的对边分别为a,b,c,且
.
(1)求角B;
(2)若b=4,求
周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/259f1f8f59d37f60a6e7ae67665f6e52.png)
(1)求角B;
(2)若b=4,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-06-07更新
|
2521次组卷
|
7卷引用:山东省聊城市2022届高三5月三模数学试题
名校
解题方法
8 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64d0d11e70c2aebf0c8012605da2e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
您最近一年使用:0次
2022-06-02更新
|
967次组卷
|
3卷引用:海南华侨中学2022届高三下学期全真模拟考试数学试题
2022·广东广州·三模
解题方法
9 . 在
中,内角
,
,
所对的边分别是
,
,
,且满足
,
.
(1)求
;
(2)若
,求
的面积
.
![](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/1c2af077aec5172afacc32157fced9c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cab0dcbc58cdb89191bf3d50e5c3230.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
解题方法
10 . 已知锐角△ABC中, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/798d5abdf60377402a48a0ec5d36d304.png)
(1)求![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401362cd91906745560fe06522d8cac9.png)
(2)若AB=7,求△ABC的面积S.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/798d5abdf60377402a48a0ec5d36d304.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401362cd91906745560fe06522d8cac9.png)
(2)若AB=7,求△ABC的面积S.
您最近一年使用:0次