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[" Tis a point on the tangent to a parabola "y^(2)=4ax" at its point "P." TL and TN are the perpe "],[" the focal radius "SP" and the directrix of the parabola respectively.Then "-],[[" (A) "SL=2(TN)," (B) "3(SL)=2(TN)," (C) "ST," (C) "S" ) "T_(" Th ")]]

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