题目
题型:解答题难度:一般来源:不详
已知函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185415-61437.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185415-75694.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185416-40546.gif)
(Ⅱ)设
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185416-76658.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185416-64357.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185416-67839.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185416-40948.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-22170.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-34903.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-96254.gif)
故
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185415-75694.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-40372.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-74145.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185418-68939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185416-40546.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185418-22290.gif)
(Ⅱ)由
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185419-16613.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185419-78025.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185419-94177.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185419-72118.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185419-29378.gif)
求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-22170.gif)
由正弦定理,
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185420-77661.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185420-79600.gif)
=
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185420-45791.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185420-70452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185420-82275.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185420-29992.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185421-88789.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-22170.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185421-59170.gif)
求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-22170.gif)
余弦定理
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185421-27251.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185421-11069.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185422-17188.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185422-52829.gif)
又,
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185422-62507.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185417-22170.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185421-59170.gif)
解析
核心考点
试题【(本题满分14分)已知函数.(Ⅰ)求的最大值及取得最大值时的集合;(Ⅱ)设的角的对边分别为,且.求的取值范围.】;主要考察你对任意角三角函数的概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185349-31376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185357-59105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185357-92722.png)
A
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185359-32443.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185359-21615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185359-95387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185359-35865.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185318-13339.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185318-85985.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185318-19607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185319-43102.png)
A.![]() | B.![]() | C.3![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185202-80010.gif)
已知向量
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185202-63540.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185202-78759.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185202-63540.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185203-86132.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185203-82852.gif)
(1)求向量
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185202-78759.gif)
(2)若向量
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185202-78759.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185203-73073.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185203-15826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185204-12003.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185204-42499.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185204-45949.gif)
(1)求证:A=;
(2)若△ABC外接圆半径为1,求△ABC周长的取值范围.
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185120-61072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822185120-86606.png)
A. 2 | B.![]() | C.1 | D.![]() |
最新试题
- 1-x2+4x-13是______次______项式,其中常数项是______.
- 2许多自然灾害在发生、发展过程中,往往会诱发一系列的次生灾害与衍生灾害,形成多种形式的自然灾害。下列灾害链表达错误的是(
- 3计算12×3+13×4+14×5+…+1n×(n+1).
- 4图是小明乘坐的出租车票,在小明乘坐的全过程中,出租车的平均速度是多少米/秒? 车号 GT-A2138 日期 2007-9
- 5补全对话。阅读下面这则对话,在空白处填入适当的句子,使补全后的对话意思完整,结构合理,上下连贯。每个空白处只能填写一个句
- 6某同学设计了一个“探究加速度与物体所受合力F及质量m的关系”的实验。图示为实验装置简图,A为小车,B为电火花计时器,C为
- 7我国把建军节定在8月1日,是为了纪念[ ]A.北伐战争B.南昌起义C.秋收起义D.广州起义
- 8如图所示为一种手摇升降晾衣架示意图,它由4个定滑轮和两个动滑轮组成,绳子的尾端绕在一个固定在墙壁的旋轮上,旋转摇柄可以使
- 9Peter is thirteen. He is 1 Grade Two this year. He likes
- 10(本小题满分8分)某高级中学共有学生3000名,各年级男、女生人数如下表: 高一年级高二年级高三年级女生487男生513
热门考点
- 1— I am taking a mid-term examination in Wenzhou No. 2 Middle
- 2The traffic in the city was _____ today, so Mary got home ea
- 3作文(50分)在初中三年的学习生活中,你意识到自己的改变了吗?是什么让你有了改变?是一件让你怦然心动的事情?是一本让你收
- 4为了让学生更多的了解“数学史”知识,某中学高一年级举办了一次“追寻先哲的足迹,倾听数学的声音”的数学史知识竞赛活动,共有
- 5下列各句中加点的成语使用不正确的一句是 ( )A.这些博学的老先生身
- 6识字写字能力 从小,热爱山,热爱水,热爱大自然那渺无边际、不可捉摸的神气与旖旎。 童年时,在故乡的乡间曾有那么一座山
- 7(10分)从5名男同学、3名女同学中选三个同学,其中有x个男同学,求x的分布列及选出的3名同学中有男有女的概率(所有结果
- 8如图所示,截面为ABC的玻璃直角三棱镜放置在空气中,宽度均为d的紫.红两束光垂直照射三棱镜的一个直角边AB,在三棱镜的另
- 9质量为1kg的物体被竖直向上抛出,在空中的加速度的大小为16m/s2,最大上升高度为5m,若g取10m/s2,则在这个过
- 10阅读下面的一组材料,写出你的发现。材料一 只要你是一只天鹅蛋,就算是生在养鸭场里也没有什么关系。(安提生《丑小鸭))材料