The cosh( Command

Command Summary

Calculates the hyperbolic cosine of a value.

Command Syntax

cosh(value)

Menu Location

The cosh( command is only found in the Catalog. Press:

1. 2nd CATALOG to access the command catalog.
2. C to skip to commands starting with C.
3. Scroll down and select cosh(.

TI-83/84/+/SE

1 byte

Calculates the hyperbolic cosine of a value. The hyperbolic trig functions sinh(, cosh(, and tanh( are an analog of normal trig functions, but for a hyperbola, rather than a circle. They can be expressed in terms of real powers of e, and don't depend on the Degree or Radian mode setting.

cosh(0)
1
cosh(1)
1.543080635

Like normal trig commands, cosh( works on lists as well, but not on complex numbers, even though the function is often extended to the complex numbers in mathematics.

# Formulas

The definition of hyperbolic cosine is:

(1)
\begin{align} \cosh{x}=\frac{e^x+e^{-x}}{2} \end{align}

# Related Commands

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