#include<iostream> #include<iomanip> #include<cmath> using namespace std; class angle{     public:         double x;         angle(double agl): x(agl){}         doubl...

#include<iostream> #include<cstdio> #include<cmath> using namespace std; const double PI = 3.1415926535; class angle{ private: int num; public: angle(){} angle(int x):num(x){} void setnum(int x){ num = x; } int getnum(){ return num; } ~angle(){} ...