题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034627-42324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034627-86328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034628-96971.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034628-58506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034628-79005.png)
解析
首先
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034629-75343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034629-94080.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034629-94080.png)
解:由已知得:
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034629-75343.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034629-94080.png)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034627-86328.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034628-58506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034628-79005.png)
核心考点
试题【已知,且是第二象限角,求的值。】;主要考察你对正弦函数的图象与性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034621-69332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034621-17088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034621-37428.png)
(Ⅰ)求
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-53726.png)
(Ⅱ)将函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-83924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-67475.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-16802.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-34168.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-99576.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034622-52948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-45570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-28914.png)
(Ⅰ)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-74629.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034534-47380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-71745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034535-16983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034527-80954.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034528-67236.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-73693.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-42486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-25142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034508-79498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034509-31660.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034501-27136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034501-44811.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911034501-49307.png)
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