// Returns cosinus of angle to v, value in radians
public double CosinusTo(Vector2 v)
{
return (X * v.X + Y * v.Y) / (Length() * v.Length());
}
// Returns sinus of angle to v, value in radians
public double SinusTo(Vector2 v)
{
return (X * v.Y - Y * v.X) / (Length() * v.Length());
}
// Returns value in radians
public double AngleTo(Vector2 v)
{
return (double)Math.Asin((X * v.Y - Y * v.X) / (Length() * v.Length()));
}