find the equation of the line passing through pcosalpha,psin alpha and inclined t x axis at 90+alpha by point slope form

The  point is pcosα, psinα and having slop m = tan90+αSO equation is, y-psinα=mx-pcosαy-psinα= tan90+αx-pcosαxtan90+α-y=pcosα× tan90+α-psinα-xcotα-y=-pcosα× cotα-psinα

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