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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 set_padist_gaussian_loss_cone(self, boundary_rad, expwidth):
 """Set the pitch-angle distribution to a Gaussian loss cone. **Call signature** *boundary_rad* The angle inside which there are no losses, in radians. *expwidth* The characteristic width of the Gaussian loss profile *in direction-cosine units*. Returns *self* for convenience in chaining. See ``OnlineI.pdf`` in the Supplementary Data for a precise definition. (And note the distinction between α_c and μ_c since not everything is direction cosines.) """

        self.in_vals[IN_VAL_PADIST] = PADIST_GLC
        self.in_vals[IN_VAL_LCBDY] = boundary_rad * 180 / np.pi # rad => deg
        self.in_vals[IN_VAL_DELTAMU] = expwidth
        return self