The length of the perpendicular from the focus S of the parabola `y^2=4ax` on the tangent at P is

The length of the perpendicular from the focus of the parabola y^(2)=8 x onto the tangent at (2,-4) is

Show that length of perpendecular from focus 'S' of the parabola y^(2)= 4ax on the Tangent at P is sqrt(OS.SP)

Show that length of perpendecular from focus 'S' of the parabola y^(2)= 4ax on the Tangent at P is sqrt(OS.SP)

The focus of the parabola y^2= 4ax is :

Prove that the locus of the foot of the perpendicular drawn from the focus of the parabola y ^(2) = 4 ax upon any tangent to its is the tangent at the vertex.

The focus of the parabola y^(2) = - 4ax is :

Let x+y=k be a normal to the parabola y^(2)=12x . If p is the length of the perpendicular from the focus of the parabola onto this normal then 4k-2 p^(2) =?

Let x+y=k be a normal to the parabola y^(2)=12x . If p is the length of the perpendicular from the focus of the parabola onto this normal then 4k-2 p^(2) =