If the normal is drawn at one extremity of the latus rectum PSP' of the conic l/r=1+e cos@ when S is

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If the normal is drawn at one extremity of the latus rectum PSP' of the conic l/r=1+e cos@ when S is the pole. Show that the distance of focus S from other point in which the normal meet the curve is

Exercise solution of Polar Equation.(Ex-XI).👇
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