def METHOD_NAME():
    R = 3.0
    lon_0 = -100.0  # 100 degrees West longitude
    lat_0 = 40.0  # 40 degrees North latitude
    x = -5.8311398
    y = 5.5444634
    projparams = {
        "proj": "aeqd",
        "lat_0": lat_0,
        "lon_0": lon_0,
        "R": R,
    }
    projparams["proj"] = "aeqd"
    lon, lat = transforms.cartesian_to_geographic(x, y, projparams)
    assert_almost_equal(lat, -20.0, 3)  # 20.0 S latitude
    assert_almost_equal(lon, 100.0, 3)  # 100.0 E longitude