Arcsech

The inverse hyperbolic secant function

fun arcsech(number)

Parameters

• number: A dimensionless number value

Discussion

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

arcsech(1)
arcsech(.5)

0 rad
1.32 rad

arcsech is valid where 0 < number <= 1