I have a set of parametrics given as:

x= f(t) = cos(t)

y= g(t) = sec(t) =1/cos(t)

0<=t<=pi/2

Trig stuff...argh...is one of my weaknesses. Maybe as a result, I have heap big difficulty seeing how I might solve either equation for t, so that i substitute and make a Cartesian equation...

Ideas?