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I've the following Mathematica-code:

BodePlot[{1/(((5.601443110900379`*^-8)*(5.601443110900379`*^-8)*(1.\
6672176431702952`*^-7)*(56000)*(56000 + 
          56000)*((56000*56000)/(56000 + 56000)))*(2*Pi*f*
         I)^3 + ((5.601443110900379`*^-8)*(5.601443110900379`*^-8)*(\
56000)*(56000 + 
           56000) + \
(5.601443110900379`*^-8)*(1.6672176431702952`*^-7)*(56000)*(56000 + 
           56000))*(2*Pi*f*
         I)^2 + ((5.601443110900379`*^-8)*(56000) + \
(5.601443110900379`*^-8)*(56000 + 56000 + 56000))*(2*Pi*f*I) + 
     1)}, {f, 0, 100}, PlotStyle -> {Black}, 
 ScalingFunctions -> {{"Linear", "dB"}, {"Linear", "Degree"}}, 
 FrameLabel -> {{" ", " "}, {HoldForm[Text[Frequentie[f]]], 
    HoldForm[Text[Fase[\[Degree]]]]}}, ImageSize -> Large]

And it give two plots: one of the amplitude and one the phase.

Now, I want to know what functions Mathematica is using to plot that phase. How can I found that out? So for the phase it is using the $\arctan$ functions but I do not know with what boundaries it is using it and how the function mathematically can be expressed, so can I ask Mathematica for that?

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