名校
1 . 若
,且
均为锐角,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59aa6c09c31e2837fbf75f79925e9a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63e88d9ce4afb1766093727c466c577.png)
您最近一年使用:0次
2021-11-26更新
|
985次组卷
|
9卷引用:上海市金山区2019-2020学年高一下学期期末数学试题
上海市金山区2019-2020学年高一下学期期末数学试题安徽省六安市第一中学2021-2022学年高一下学期开学考试数学试题安徽省合肥市肥东县综合高中2022-2023学年高一上学期12月月考数学试题湖南省长沙市雨花区2021-2022学年高一上学期期末数学试题(已下线)5.5 三角恒等变换--2021--2022高一上学期数学新教材配套提升训练(人教A版2019必修第一册)四川省德阳市广汉中学2021-2022学年高一下学期第一次月考数学(理)试题山西省太原市第四十八中学校2021-2022学年高一上学期12月月考数学试题河北省邢台市信都区会宁中学2022-2023学年高一上学期期末测试数学试题(已下线)上海市高一下学期期末真题必刷03-期末考点大串讲(沪教版2020必修二)
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2 . 已知向量
,
,且函数
的图象经过点
.
(1)求
的解析式及最小正周期;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5be7717535e097032ffa804f9df280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51b9e1cbed2b699de9ab4feb37cab0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae9f908aabcd9d9c46a0ecdfd1d6c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/642daf8c343639ececb2f759d41af9be.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8958445edadc2967817144c27e83c6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f201f6e84279e80b85f394f4d930ed41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
您最近一年使用:0次
名校
解题方法
3 . 筒车是我国古代发明的一种水利灌溉工具,因其经济又环保,至今还在农业生产中得到使用.明朝科学家徐光启在《农政全书》中用图画描绘了筒车的工作原理(图1所示).假定在水流量稳定的情况下,筒车上的每一个盛水筒都做逆时针匀速圆周运动,筒车转轮的中心
到水面的距离
为
,筒车的半径
为
,筒车每秒转动
,如图2所示,盛水桶
在
处距水面的距离为
,则
后盛水桶
到水面的距离近似为( )
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609066847715328/2612822077521920/STEM/d5a339b6-dd6b-4bc8-9574-c85dc474b9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c6ade7812dfcc12fc1661a02a45b61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f931c9aeb89e358aaa669610142c4fd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f40e52cae35b167cc4339bc55075c06e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eaeafdef777cd410d7353d65bf46690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f362361a43ac1138971cce703bfccf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2020/12/7/2609066847715328/2612822077521920/STEM/d5a339b6-dd6b-4bc8-9574-c85dc474b9f8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-12-12更新
|
523次组卷
|
4卷引用:安徽省五校(怀远一中、颍上一中、蒙城一中、涡阳一中、淮南一中)2020-2021学年高三上学期12月联考文科数学试题
名校
4 . 已知函数
.
(1)当
时,求
的值域;
(2)是否存在实数
,使得
在
上单调递增?若存在,求出
的取值范围,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565c764a39ce558239f79b00bebcb467.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b42048481d02f1112bbcd877790334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed185cb6fb43801b9da1a6d1d2a5e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1067e20c7cd52175556650ba6e2dfe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2020-10-15更新
|
572次组卷
|
5卷引用:重庆市第一中学2021届高三上学期第一次月考数学试题
重庆市第一中学2021届高三上学期第一次月考数学试题(已下线)痛点6 三角函数中求解参数问题-2021年新高考数学一轮复习考点扫描安徽省淮北市第一中学2022-2023学年高一下学期第二次月考数学试题江西省宜春市奉新县第一中学2022届高三上学期第一次月考数学(理)试题黑龙江省大庆市外国语学校2021-2022学年高一下学期开学考试数学试题
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解题方法
5 . 在
中,角
,
,
的对边分别为
,
,
,已知
,
,
,
为三个相邻的自然数,且
.
(1)证明:
;
(2)若
,
,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/ce613eaa5df46a50174085ef5d1087fb.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/c7b9446d7b31f0d6e044cf99deeb20aa.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd23aaafa6a08df860bad3736b2064e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef001eeef468ca21ac0cbb23fd135657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9923f4f4d4e0dbf1e11e4e708e84de2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
您最近一年使用:0次
2020-09-15更新
|
321次组卷
|
3卷引用:浙江省宁波市宁海中学2020-2021学年高三上学期9月第一次模拟数学试题
6 . 在
中,角
,
,
所对的边分别为
,
,
.若
,
,
时,则
的面积为( )
![](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/7613ef4f71b2c54461c498779adfd92a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ed3f59f89bf95847bc822f5f2440f1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42190fdb24c6e918e06eb4a2ebf8856f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-09-05更新
|
645次组卷
|
4卷引用:安徽省宣城市2019-2020学年高一下学期期末数学(文)试题
安徽省宣城市2019-2020学年高一下学期期末数学(文)试题安徽省宣城市2019-2020学年高一下学期期末数学(理)试题云南省曲靖市宣威市2019-2020学年高二下学期期末数学(文科)试题(已下线)6.4.2 正余弦定理(精练)-2020-2021学年高一数学一隅三反系列(人教A版2019必修第二册)
7 . 周长为9的三角形三边长成公差为1的等差数列,最大内角和最小内角分别记为α,β,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7dc4a8ca221732931bb72442a15df14.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-08-16更新
|
268次组卷
|
3卷引用:安徽省马鞍山市含山中学、和县中学2019-2020学年高一下学期期末联考数学(文)试题
解题方法
8 . 已知
,
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e1b986cde6b927f8ea96dde28b6381.png)
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9330f5a1902fe99fc5edd744fbe9146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015bf25507c58d6dc18117cf8516604d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e1b986cde6b927f8ea96dde28b6381.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca9b3a757aa7c2c5eb01fec618c2d1ab.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
您最近一年使用:0次
2020-08-16更新
|
239次组卷
|
2卷引用:安徽省马鞍山市含山中学、和县中学2019-2020学年高一下学期期末联考数学(文)试题
解题方法
9 . 已知
,
,
,
.
(1)求
的值.
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/612fd36aeb83099c4644c076db691612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcdb84e54aa28ca0603d976524de0be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f778337c8090e32dd6ef961c83c9fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22b0888316a0d14cc5dd403c3797d80.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35eab8532e026af0b303f1b52291ba77.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
您最近一年使用:0次
解题方法
10 . 如图,在四边形ABCD中,已知
,
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/319536a5b0d3f94d4b1a495c3b19d79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eba77783b1b61d0c95b3901e962268c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca90e8a784f990c4097eec9219908d.png)
![](https://img.xkw.com/dksih/QBM/2020/7/30/2516899770736640/2517643003060224/STEM/00d36633-cbde-4bd0-af4b-18f51a8e9bce.png)
您最近一年使用:0次
2020-07-31更新
|
574次组卷
|
2卷引用:山东省临沂市2019-2020学年高一下学期期末考试数学试题