define _USE_MATH_DEFINES

include

using namespace std;

int main(void) {

cout << setprecision(10); cout << setiosflags(ios::fixed);

cout << setw(14) << acos(-1) << endl; cout << setw(14) << acos(0.5)*180/M_PI << endl;

cout << setw(14) << asin(-1) << endl; cout << setw(14) << asin(0.5)*180/M_PI << endl;

cout << setw(14) << atan(0.5) << endl; cout << setw(14) << atan(1)*180/M_PI << endl;

cout << setw(14) << atan2(1,1) << endl; cout << setw(14) << atan2(-1,-1) << endl;

cout << setw(14) << cos(45*M_PI/180) << endl; cout << setw(14) << cos(atan(1)) << endl;

cout << setw(14) << sin(M_PI/6) << endl; cout << setw(14) << sin(1) << endl;

cout << setw(14) << tan(4) << endl; cout << setw(14) << tan(M_PI/4) << endl;

cout << endl; cout << "Tecle para encerrar... "; cin.get(); return 0; }