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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 get_aoi(self, solar_zenith, solar_azimuth):
 """Get the angle of incidence on the system. Parameters solar_zenith : float or Series. Solar zenith angle. solar_azimuth : float or Series. Solar azimuth angle. Returns ------- aoi : Series The angle of incidence """


        aoi = irradiance.aoi(self.surface_tilt, self.surface_azimuth,
                             solar_zenith, solar_azimuth)
        return aoi