Arccosh

The inverse hyperbolic cosine function

fun arccosh(number)

Parameters

• number: A dimensionless number value

Discussion

arccosh is the inverse of cosh so if arccosh(number) == x then cosh(x) == number. The returned number is in terms of radians:

arccosh(1)
arccosh(5)

0 rad
2.29 rad

arccosh is valid where number >= 1.