How to Calculate Hyperbolic Trig on Casio Scientific Calculator (Sinh, Cosh, Sinh^1, Cosh^-1) Cómo calcular funciones trigonométricas hiperbólicas en una calculadora científica Casio fx-991ES (Sinh, Cosh, Sinh^1, Cosh^-1) This is a video in my Casio Scientific Calculator Tutorial Series. In this video, I show you how to calculate hyperbolic trigonometric functions (sinh &cosh) and inverse hyperbolic trigonometric functions (sinh^-1 &cosh^-1) on the Casio Fx-991ES. This should also be applicable to similar model Casio scientific calculators.