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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def aer2enu(az: float, el: float, srange: float, deg: bool = True) -> Tuple[float, float, float]: """ Azimuth, Elevation, Slant range to target to East, north, Up Parameters azimuth : float or np.ndarray of float azimuth clockwise from north (degrees) elevation : float or np.ndarray of float elevation angle above horizon, neglecting aberattions (degrees) srange : float or np.ndarray of float slant range [meters] deg : bool, optional degrees input/output (False: radians in/out) Returns -------- e : float or np.ndarray of float East ENU coordinate (meters) n : float or np.ndarray of float North ENU coordinate (meters) u : float or np.ndarray of float Up ENU coordinate (meters) """

    if deg:
        el = radians(el)
        az = radians(az)

    with np.errstate(invalid='ignore'):
        if (np.asarray(srange) < 0).any():
            raise ValueError('Slant range  [0, Infinity)')

    r = srange * cos(el)

    return r * sin(az), r * cos(az), srange * sin(el)