题目
题型:不详难度:来源:
已知点A、B、C的坐标分别为A(3,0)、B(0,3)、C(cos
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170719-32596.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170719-32596.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170719-32596.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170719-24610.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-19848.gif)
(Ⅰ)若|
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-34616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-49215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170719-32596.gif)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-34616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-49215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-82935.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-34616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-49215.gif)
∵|
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-34616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-49215.gif)
又α∈(
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170719-24610.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-19848.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-26548.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-34616.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-49215.gif)
∴cosα+sinα=
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170721-67802.gif)
∴2
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170721-92565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170721-80717.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170720-82935.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170721-99138.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170721-92565.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170721-80717.gif)
解析
核心考点
试题【(本题满分10分)已知点A、B、C的坐标分别为A(3,0)、B(0,3)、C(cos,sin),∈(,).(Ⅰ)若||=||,求角的值;(Ⅱ)若·= -1,求的】;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/20190822/20190822170637-63580.png)
A.![]() | B.![]() | C.﹣1 | D.1 |
OB上,设∠BOP=θ.平行四边形MNPQ的面积为S.
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170608-63098.jpg)
(1)求S关于θ的函数关系式;
(2)求S的最大值及相应θ的值.
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170550-92173.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170550-81708.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170551-56974.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170551-40279.gif)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170551-85801.gif)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170551-85801.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170551-79801.gif)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170551-59962.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170552-67002.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-99755.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-27245.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-91182.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-43892.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-40628.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-91182.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170548-96381.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170548-52908.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170548-65515.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-99755.gif)
既不是奇函数也不是偶函数;④
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-99755.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170548-72767.gif)
在经过点(a,b)的直线与函数的图
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170547-99755.gif)
有正确结论的编号)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170543-61687.gif)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822170543-32237.gif)
(Ⅱ)若又给条件q:“|f(x)-m|<2”且P是q的充分条件,求实数m的取值范围
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