- Coordinate Geometry, Geometric, Mathematical, Maths

Equation of a straight line passing through a point and making a given angle with a given line

#include using namespace std;  double line_slope(double a, double b){    if (a != 0)        return -b / a;                  else        return (-2);}  void line_equation(double a, double b,                   double c, double x1,                   double y1, double alfa){        cout