解题方法
1 . 已知函数
.
(1)求函数
的最小正周期;
(2)若
且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d322eec2c46be157bf409304e9f2d619.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6363449f064b8aeeaa11ae6e096cb25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53f153f67f327f16c7ed5cd6fc2d4f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5ff5a2e7663e6a21ccea3149a10113.png)
您最近一年使用:0次
解题方法
2 . 在
中,内角A,B,C的对边分别为a,b,c,已知
的面积
.
(1)求
;
(2)若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5ad9a1014f7e16d43bd1abcca96086.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a24a8f5e8fb89381f8add6549170345.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809bf8b2fd832a47900a4a90f66c826a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dfa04ed69eb5e36931c076e0cf3f01e.png)
您最近一年使用:0次
名校
3 . 若
,
,
成等比数列,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d66c03d4ca06819a6ce7fc8ea6de0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4374471d24e86c6f55aa7f6886ff3302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf37490e5f16840bb6c82a36e4ee687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-21更新
|
2382次组卷
|
7卷引用:四川省绵阳市三台中学校2024届高三下学期第一次仿真测试理科数学试题
四川省绵阳市三台中学校2024届高三下学期第一次仿真测试理科数学试题江苏省南通市2024届高三第二次调研测试数学试题江苏省扬州市2024届高三第二次调研测试数学试题江苏省泰州市2024届高三第二次调研测试数学试题江西省南昌市第十九中学2024届高三下学期第二次模拟考试数学试题(已下线)江苏省泰州市2024届高三第二次调研测试数学试题变式题6-10(已下线)江苏省南通市2024届高三第二次调研测试数学试题变式题 6-10
解题方法
4 . 在
中,内角
,
,
所对的边分别为
,
,
已知
.
(1)求角
的大小;
(2)设
,
,求
的值.
![](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/af223ff175f91b7ad30b494077fcec1c.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af039cad52ca4e1f1e322277bc81afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabacb3cb012a3a8a9228c332444123c.png)
您最近一年使用:0次
2023-11-15更新
|
1141次组卷
|
5卷引用:四川省雅安市天立高级中学2024届高三一诊模拟数学(文)试题
四川省雅安市天立高级中学2024届高三一诊模拟数学(文)试题四川省雅安市天立高级中学2024届高三一诊模拟数学(理)试题江西省2024届高三上学期11月一轮总复习调研测试数学试题(已下线)模块六 全真模拟篇 拔高2 期末终极研习室(2023-2024学年第一学期)高三(已下线)每日一题 第6题 挖掘条件精准定位(高三)
解题方法
5 . 在斜三角形
中,内角
所对的边分别为
,已知
.
(1)证明:
;
(2)若
的面积
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a60cbe43441afaac1f6e822020779e9.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3f90f37a69d673d5654acf3e7e3630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f98656da793a0d6d3346074d7b5281c.png)
您最近一年使用:0次
名校
解题方法
6 . 在
中,角
,
,
所对的边分别为
,
,
,
,
于点D,且
,则线段
长度的最大值为_________ .
![](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/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b757f0c42ae5c9a2d6a4b19e5877b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbdd5f76f5e399e25316342270b2784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2023-10-20更新
|
495次组卷
|
3卷引用:四川省成都市成都市石室中学2023-2024学年高二上学期10月月考数学试题
解题方法
7 . 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
解题方法
8 . 已知
的三个内角分别为
、
、
,其对边分别为
、
、
,若
.
(1)求角
的值;
(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/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/63d0c6d411d324238c11c2df1d612296.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.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
2023-07-21更新
|
996次组卷
|
3卷引用:四川省绵阳市高中2024届高三突击班第零次诊断性考试理科数学试题
9 . 请从下列条件①
;②
;③
中选取一个作为已知条件,补充在横线上,并做出解答.
已知
的内角
,
,
所对应的边分别是
,
,
,满足__________.
注:若选择多个条件分别解答,则按第一个计分
(1)求
的值;
(2)若
,
,求
的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f7d23e58af5cfcfb70275689d254a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a782214b1a6043667822e2df87a37543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2edaa44f3a524663ebaa7712ecd549df.png)
已知
![](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)
注:若选择多个条件分别解答,则按第一个计分
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef9e1e927934f8ae7a2a60a18cfc763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-07-13更新
|
255次组卷
|
2卷引用:四川省凉山彝族自治州2022-2023学年高一下学期期末数学试题
解题方法
10 . 世界大学生夏季运动会,素有“小奥运会”之称,由国际大学生体育联合会(International University Sports Federation)主办,只限在校大学生和毕业不超过两年的.大学生(年龄限制为17~28岁)参加的世界大型综合性运动会.始办于1959年,其前身为国际大学生运动会.第31届世界大学生夏季运动会即将在成都拉开帷幕,为了配合大运会的基础设施建设,组委会拟在成都东安湖公园一角修建具有成都文化特色的观景步道(如图).在
中,
,
是
边上一点,
米,
.
(1)若
米,求
;
(2)当
,记
,求当角
取何值时,
的面积最大,并求出这个最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0341d5d97dd32312f8cbf89dfed17201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03bb56c7e76954b192bd8595a0865a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269c684310d0f7b5b9bf0a291e7ee748.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/fd87846d-c3fe-4efc-85d5-37c978fdba81.png?resizew=175)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655f9f9055fb6e3fc3bf0eabb029fa4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abf0f217459ffa61833be64564e2212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763cfa01bfe566d183882df89f87eda5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
您最近一年使用:0次