int main() {
  double pi = 4 * atan(1);
  
  double radians = pi / 4;
  double degrees = 45.0;
  double temp;
  
  printf(, sin(radians), sin(degrees * pi / 180));
  
  printf(, cos(radians), cos(degrees * pi / 180));
  
  printf(, tan(radians), tan(degrees * pi / 180));
  
  temp = asin(sin(radians));
  printf(, temp, temp * 180 / pi);
  
  temp = acos(cos(radians));
  printf(, temp, temp * 180 / pi);
  
  temp = atan(tan(radians));
  printf(, temp, temp * 180 / pi);

  return 0;
}