题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063434-31902.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063434-72593.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063434-12506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-77462.png)
解析
解:∵四边形AOPB为菱形
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-57669.png)
∴OP=PB=AB=OB,
∵OP=OB,
∴△POB,△AOB是等边三角形,
∴∠POM=180°-60°×2=60°,
∴OM=OP?cos∠POM=1,PM=OP?sin∠POM=
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-59426.png)
当点P在x轴的上方时,P的坐标为(-1,
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-59426.png)
当点P在x轴的下方时,P的坐标为(-1,-
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-59426.png)
故答案为:(-1,
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-59426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063435-59426.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063429-85534.gif)
(1)求证:AD是⊙O的切线;
(2)若AC=8,tanB =
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063429-57874.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063423-45653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063424-68995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063424-85183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063424-68995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063424-84025.png)
A.37° | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063417-95758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063417-95758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063417-95758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063417-33338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063413-24904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063407-35403.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063407-49504.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063407-49287.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063407-49504.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063407-22310.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063407-16720.gif)
(1)请写出两个不同类型的正确结论;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063408-85174.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063408-42380.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105063408-27683.gif)
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