C ++中的三角函数

C ++中的三角函数

    用于三角函数的计算等计算余弦，正弦，正切值，以及反三角函数求对应的弧度制角度。

 1 // C++ code to demonstrate the example of 
 2 // trigonometric functions
 3  
 4 #include 
 5 #include 
 6 using namespace std;
 7  
 8 // main() section
 9 int main()
10 {
11     float x;
12     float y;
13     
14     x = 0.25;
15     cout<<"cos("<") : "<endl;
16     cout<<"sin("<") : "<endl;
17     cout<<"tan("<") : "<endl;
18     cout<<"acos("<"): "<endl;
19     cout<<"asin("<"): "<endl;
20     cout<<"atan("<"): "<endl;
21     y = 1.0;
22     cout<<"atan2("<","<"): "<endl;    
23     
24     return 0;
25 }