def get_longitude_tuple(imgMetadata):
    """
    Returns the tuple containing the degrees, minutes and seconds of the
    longitude coordinate as float values.
    """
    return (imgMetadata['Exif.GPSInfo.GPSLongitude'].value[0], imgMetadata['Exif.GPSInfo.GPSLongitude'].value[1], imgMetadata['Exif.GPSInfo.GPSLongitude'].value[2])