import math


def get_angle(start_point: tuple, end_point: tuple) -> float:
    """
    Determines the angle between the line specified by `start_point` and `end_point`.
    """
    dx = end_point[0] - start_point[0]
    dy = end_point[1] - start_point[1]
    rads = math.atan2(-dy, dx)
    rads %= 2 * math.pi
    degrees = math.degrees(rads)
    return degrees