# Hyperbolic Functions

The equation editor allows you to write basic hyperbolic functions, as well as their inverses, and will detect which function you have typed based on its alphabetic abbreviation.

As with trigonometric functions, writing the alphabetic equivalent of the inverse function (as opposed to the function with a superscripted negative 1) will cause the equation editor to display the appropriate print and braille notation, respectively.

Squared functions cannot be entered via Braille input at present because the equation editor expects an argument after the function name.

## Exercises

Type the following equations into the equation editor below and verify that the equation editor produces the proper Nemeth braille output in each case. Also verify that a sighted friend can read each number you have typed as it is displayed on the screen, and feel free to try your own examples.

- Hyperbolic Cosine of 2 Theta
- Inverse Hyperbolic Sine of Pi / 2
- Hyperbolic Cotangent of 90 degrees + Hyperbolic Sine of 30 degrees
- Inverse Hyperbolic Tangent of Pi / 6 + Hyperbolic Secant of 30 degrees
- Hyperbolic Cosecant of 45 degrees + sine of Pi / 8 does not equal hyperbolic tangent of 45 degrees