Hyperbolic functions
The hyperbolic functions are the following:
hyperbolic sine:
(which is read as: shine x equals ...)

Hyperbolic sine y = sinh x
hyperbolic cosine:
(which is read as: cosh x equals ...)

Hyperbolic cosine y = cosh x
hyperbolic tangent:
(which is read as: tanch x equals ...)

Hyperbolic tangent y = tanh x