Solution 33391: Using Hyperbolic Functions on the TI-36X Pro.
How do I use the hyperbolic functions on the TI-36X Pro?
By pressing the Trigonometry keys (sin,cos,tan) repeatedly, you will be able to access the corresponding hyperbolic or inverse hyperbolic functions. Angle modes do not affect hyperbolic calculations.
• Press [sin/sin-1] 3 times until sinh( is displayed
• Input 1.8 and press [)]
• Press [enter]
The answer is 2.942174288
Please see the TI-36X Pro guidebook for additional information.