Answers

2014-05-13T15:30:12+05:30
I think it is
 (x-h)^2=4P(y-k)
    (x,y) is the vertex and P is the focus distance.
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2014-05-13T15:34:22+05:30
The equation of parabola in terms of trignometry is ( x-h)^2= 4P(y-k).
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