If p,q are the lengths of the perpendiculars from the origin to xcosA-ysinA=sin2A; xsinA+ycosA=cos2A, then p2+q2=
If p,q are the lengths of the perpendiculars from the origin to xcosA-ysinA=sin2A; xsinA+ycosA=cos2A, then p2+q2=
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