Locus And the Parabola (1 Viewer)

[FroZenWaffleS]

How you go about finding the focus of a parabola if no information is given except let's say only the ends points of the latus rectum are given or the x=2at and y=at*2 are given???

 

[shafqat]

could you give an example to clarify?
if you're given the parametrisation, then you already know a, the focal distance
and remember that the latus rectum goes through the focus