#include <stdio.h> #include <math.h> #define PI 3.14159265 int main () { double x, y, result; x = 0; y = 6; result = atan2 (y, x) * 180 / PI; printf ("Arctangent for (x = %lf, y = %lf) is %lf degrees\n", x, y, result ); return 0; }