I am plotting polar curves with `PolarPlot` and I tried plotting a parabola with $\frac{2}{1-\cos x}$ and $\sec x$. 

Obviously there are two singularities that have to be considered, $\cos x=1$ and $\cos x=0$. I dont know how to specify multiple singularities for the same function or variable. This is what I have tried so far:

    PolarPlot[{2/(1 - Cos[x]), Sec[x]}, {x, 0, 2 \[Pi]}, 
     Exclusions -> {Cos[x] == 0, 1}]
    
    PolarPlot[{2/(1 - Cos[x]), Sec[x]}, {x, 0, 2 \[Pi]}, 
     Exclusions -> {x == 0, 2 \[Pi], \[Pi]/2, (3 \[Pi])/2}]

    PolarPlot[{2/(1 - Cos[x]), Sec[x]}, {x, 0, 2 \[Pi]}, 
     Exclusions -> {Cos[x] == 0, Cos[x]==1}]

What is the right way to do this?

Any help appreciated. Thank you.