Method cos

numericals.py:132–135

(self, other: Point)

    return np.sqrt(self.x**2 + self.y**2)

  def cos(self, other: Point) -> float:
    x, y = self.x, self.y
    a, b = other.x, other.y
    return (x * a + y * b) / self.norm() / other.norm()

  def dot(self, other: Point) -> float:
    return self.x * other.x + self.y * other.y