- #1
DaalChawal
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Tangent is drawn at any point ( $x_1$ , $y_1$ ) other than vertex on the parabola $y^2$ = 4ax . If tangents are drawn from any point on this tangent to the circle $x^2$ + $y^2$ = $a^2$ such that all chords of contact pass through a fixed point ( $x_2$ , $y_2$ ) then
(A) $x_1$ , a , $x_2$ are in G.P.
(B) $y_{1} \over 2$ ,a, $y_2$ are in G.P.
(C) -4 , $y_{1} \over y_{2}$ , $x_{1} \over x_{2}$ are in G.P.
(D) $x_1$ $x_2$ + $y_1$ $y_2$ = $a^2$
(A) $x_1$ , a , $x_2$ are in G.P.
(B) $y_{1} \over 2$ ,a, $y_2$ are in G.P.
(C) -4 , $y_{1} \over y_{2}$ , $x_{1} \over x_{2}$ are in G.P.
(D) $x_1$ $x_2$ + $y_1$ $y_2$ = $a^2$