HP33S Hyperbolic functions With x in the display:

• Press {LeftShift}, HYP, then SIN - to calculate Hyperbolic sine of x (SINH)
• Press {LeftShift}, HYP, then COS - to calculate Hyperbolic cosine of x (COSH)
• Press {LeftShift}, HYP, then TAN - to calculate Hyperbolic tangent of x (TANH)
• Press {LeftShift}, HYP, LS, then ASIN - to calculate Hyperbolic arc sine of x (ASINH)
• Press {LeftShift}, HYP, LS, then ACOS - to calculate Hyperbolic arc cosine of x (ACOSH)
• Press {LeftShift}, HYP, LS, then ATAN - to calculate Hyperbolic arc tangent of x (ATANH)