题目
题型:解答题难度:简单来源:不详
已知
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081815-43007.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081815-47841.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081815-77037.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-84176.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-47003.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-48282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-98901.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-18155.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-38636.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-21353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-77005.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-36843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-21353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-11254.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081818-98855.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081818-15483.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-48282.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-98901.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081816-18155.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-38636.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-21353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-77005.gif)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-36843.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-21353.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081817-11254.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081810-99077.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
已知
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081801-57734.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081802-55227.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081800-11939.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081801-20252.gif)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081758-23459.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081758-65627.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081759-24782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081759-61058.gif)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
sin150°的值为
A
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081756-21393.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081757-60482.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081757-14794.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190821/20190821081757-54445.gif)
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