题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-90229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-58866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-92547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-76030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-90713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-26669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020519-84842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020519-55980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020519-62695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020519-27394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-75794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-59679.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-76030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-90713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-74699.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-71944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-26669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-59679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020521-50539.png)
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-76030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020521-70921.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020521-76868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-71944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-26669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-75794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020521-29919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020522-48321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020519-27394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020522-21141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020522-50489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020522-71062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020522-17339.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-59679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020521-50539.png)
试题解析:(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020523-16489.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020523-80559.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-90713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020523-45223.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020523-51446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020524-42471.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020518-90713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-71944.png)
(Ⅱ)由
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-75794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020524-79204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020524-50169.png)
∵
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020524-12163.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020524-69433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020525-99035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020525-94710.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020525-45463.png)
法一:又
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020525-89749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020526-21380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020522-71062.png)
∴当
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020526-30306.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020520-59679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020521-50539.png)
法二:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020526-45729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020526-74075.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020527-47700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020527-21524.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020507-62092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020507-72097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020508-42099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020508-64868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020508-81167.png)
(Ⅰ)求角
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020508-51915.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020509-14111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020509-55289.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020509-65023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020500-56350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020500-41237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020500-13591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020500-47838.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020446-98984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020446-89598.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020446-18511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020446-21730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020447-48524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020447-17860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020447-91566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020447-66138.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020447-63115.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020432-98696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020432-30514.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020432-38792.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020432-87641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020433-82877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020433-76789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020433-48310.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020433-84228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020434-33135.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020434-45997.png)
(1)求角
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020432-30514.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020434-47286.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020434-68904.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020432-98696.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105020425-20240.png)
A.![]() | B.![]() | C.1 | D.![]() |
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