题目
题型:单选题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030309-32020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030309-38268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030309-61004.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:因为
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030310-30134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030310-75625.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030309-38268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030311-76004.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030311-29864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030311-59023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030311-76134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030311-11178.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030312-47393.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030312-87498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030312-92630.png)
核心考点
试题【已知且,则的值是( )A.B.C.D.】;主要考察你对同角三角函数的基本关系等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030304-94978.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030304-86325.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030304-29260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030304-86325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030231-96923.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030231-86371.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030231-76532.png)
(2)已知
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030232-30037.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030232-26911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030232-44258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030228-44995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030228-10730.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-52103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-11773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-52103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-11773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-52103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-50851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-50851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-11773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-52103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030219-56370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030219-12127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030219-40602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-52103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-50851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-50851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030219-17715.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-50851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-11773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030220-75950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030220-10704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030220-71756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030220-86727.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030220-45734.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030220-77790.png)
(1)求山路
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030219-56370.png)
(2)假设乙先到,为使乙在
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030218-11773.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030221-98981.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030215-73217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823030215-24608.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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