Casio fx-CG50 - Hyperbolic functions of complex numbers

[ijabbott]

I suppose you could use the identities \(\sinh(z) = \frac{e^z - e^{-z}}{2}\), \(\cosh(z) = \frac{e^z + e^{-z}}{2}\), \(\tanh(z) = \frac{e^z - e^{-z}}{e^z + e^{-z}}\), etc. - but it would be nicer if they were built in!