computes the angle between two points code example
Example 1: angle between two points
double angle = atan2(y2 - y1, x2 - x1) * 180 / PI;".Example 2: angle between two points
double angle = atan2(y2 - y1, x2 - x1) * 180 / PI;".double angle = atan2(y2 - y1, x2 - x1) * 180 / PI;".double angle = atan2(y2 - y1, x2 - x1) * 180 / PI;".