题目
题型:解答题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211042-17160.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211042-62314.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211042-40357.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211042-67151.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211042-15885.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211043-54985.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211043-78871.gif)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211043-51330.gif)
则
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211043-71239.gif)
即
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211044-68255.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211044-69955.gif)
核心考点
试题【如图,考虑点,,,.你能从这个图出发,推导出公式吗?】;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/20190822/20190822211011-87391.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211011-65943.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211011-97629.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211012-70262.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822211012-40014.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210945-46089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210945-56048.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210946-47300.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210940-23207.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210940-19763.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210941-29273.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210941-40061.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-34091.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-54174.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-92780.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-21067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-54174.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-92780.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-21067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-25060.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210935-53205.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210935-56384.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-21067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210935-17331.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210935-11193.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210934-92780.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210936-91049.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210936-45455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210925-90665.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210925-61566.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210926-55314.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210926-15229.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210926-48035.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210926-19715.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210926-34592.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20190822/20190822210927-66248.gif)
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