import math


def get_angle(x1, y1, x2, y2):
    """
    Calculates the angle of the line between the two given coordinates and the x-axis.
    Will always be between 90 to -90 degrees.
    :param x1: x coordinate at point 1
    :param y1: y coordinate at point 1
    :param x2: x coordinate at point 2
    :param y2: y coordinate at point 2
    :return: (float) the Related Acute Angle in degrees
    """
    deltaX = x2 - x1
    deltaY = y2 - y1
    return math.degrees(math.atan(deltaY / deltaX))