Arcsec

The inverse secant function

fun arcsec(number)

Parameters

• number: A dimensionless number value

Discussion

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

arcsec(1)
arcsec(-1)

0 rad
3.14 rad

arcsec is valid where number >= 1 or number <= -1.