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acosd

Compute the principal value of the arc cosine of x, return in degrees.

Base.Math.acosd — Function
acosd(x)

Compute the inverse cosine of x, where the output is in degrees. If x is a matrix, x needs to be a square matrix.

Julia 1.7

Matrix arguments require Julia 1.7 or later.

source

Methods

julia> methods(acosd, (Any,), [Base, Base.Math, Base.MathConstants, Base.MPFR])# 2 methods for generic function "acosd" from Base.Math:
 [1] acosd(x::BigFloat)
     @ Base.MPFR mpfr.jl:887
 [2] acosd(x)
     @ special/trig.jl:1287

Examples

Real Numbers

julia> acosd(1.0)
0.0

julia> acosd(0.0)
90.0

julia> acosd(0.5)
60.00000000000001

julia> acosd(-1.0)
180.0

Complex

julia> acosd(0+0im)
90.0 - 0.0im

Tips

See Also

acos

Extended Inputs

Tech Notes

  • Implemented in terms of acos: acosd(x) = rad2deg(acos(x))

Version History

Introduced in Julia v1.0 (2018)