Hi thomas49th!
Originally Posted by thomas49th
Errr sorry I don't follow :S. I've only just started hyperbolics today and havn't used an imaginary numbers with them yet?
Thanks :)

Oops!
In that case, all you need to know is that "hyperbolic" trig functions cosh sinh tanh sech coth and cosech work
almost the same as ordinary trig functions (for example, sinh(2x) = 2sinhx coshx), but occasionally you get a + instead of a minus (or vice versa) … I think only when you have
two sinh's.
But, to be on the safe side, use
gabbagabbahey's method!