Two mutually perpendicular tangents of the parabola `y^2=4a x` meet the axis at `P_1a n dP_2` . If `S` is the focus of the parabola, then `1/(S P_1)` is equal to `4/a` (b) `2/1` (c) `1/a` (d) `1/(4a)`

Two mutually perpendicular tangents of the parabola y^(2)=4ax meet the axis at P_(1)andP_(2) . If S is the focal of the parabola, Then (1)/(SP_(1))+(1)/(SP_(2)) is equal to

Two mutually perpendicular tangents of the parabola y^(2)=4ax at the points Q_(1) and Q_(2) on it meet its axis in P_(1) and P_(2) . If S is the focus of the parabola, then the value of ((1)/(SP_(1))+(1)/(SP_(2)))^(-1) is equal

If the tangent at P on y^(2)=4ax meets the tangent at the vertex in Q and S is the focus of the parabola,then /_SQP is equal to

If the tangents to the parabola y^(2)=4ax make complementary angles with the axis of the parabola then t_(1),t_(2)=

The length of the perpendicular from the focus s of the parabola y^(2)=4ax on the tangent at P is

From a point T a tangent is drawn to touch the parabola y^(2)=16x at P(16 ,16) .If S is the focus of the parabola and /_TPS=cot^(-1)k .then k is equal to - - - -

If y=2x-3 is a tangent to the parabola y^(2)=4a(x-(1)/(3)) then 'a' is equal to:

The tangents to the parabola y^(2)=4ax at the vertex V and any point P meet at Q. If S is the focus,then prove that SP.SQ, and SV are in G.

The tangent to the parabola y^(2)=4(x-1) at (5,4) meets the line x+y=3 at the point