`secd`

Compute the secant of x expressed in degrees.

Base.Math.secd — Function

secd(x::T) where {T <: Number} -> float(T)

Compute the secant of x, where x is in degrees.

Throw a DomainError if isinf(x), return a T(NaN) if isnan(x).

source

Methods

julia> methods(secd, (Any,), [Base, Base.Math, Base.MathConstants, Base.MPFR])# 1 method for generic function "secd" from Base.Math:
 [1] secd(z::Number)
     @ special/trig.jl:1167

Examples

Real Numbers

julia> secd(0)
1.0

julia> secd(45)
1.414213562373095

julia> secd(60)
2.0

julia> secd(90)
Inf

julia> secd(180)
-1.0

Complex

julia> secd(0+0im)
1.0 + 0.0im

Tips

Extended Inputs

Tech Notes

Implemented in terms of cosd: secd(x) = inv(cosd(x))

Version History

Introduced in Julia v1.0 (2018)