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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 FromLatLng(lat, lng):
 """ Returns a new point representing this latitude and longitude under a spherical Earth model. """

    phi = lat * (math.pi / 180.0)
    theta = lng * (math.pi / 180.0)
    cosphi = math.cos(phi)
    return Point(math.cos(theta) * cosphi,
                 math.sin(theta) * cosphi,
                 math.sin(phi))