LL' is the latus rectum of a parabola, y2 = 4ax, a > 0. Find the co-ordinates of points L and L'.
Equation of parabola is y2 = 4ax. The focus is at S (a, 0). ∴ OS = a Let coordinates of point L be and of L' be with ∴ ∴ Coordinates of L are (a, 2a) and of L' are (a, -2a).
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The focus is at S (a, 0).
and of L' be
with 
