8.7 ACOSD — Arccosine function, degrees

Description:

ACOSD(X) computes the arccosine of X in degrees (inverse of COSD(X)).

Standard:

Fortran 2023

Class:

Elemental function

Syntax:

RESULT = ACOSD(X)

Arguments:
XThe type shall either be REAL with a magnitude that is less than or equal to one.
Return value:

The return value is of the same type and kind as X. The real part of the result is in degrees and lies in the range 0 \leq \Re \acos(x) \leq 180.

Example:
program test_acosd
  real(8) :: x = 0.866_8
  x = acosd(x)
end program test_acosd
Specific names:
NameArgumentReturn typeStandard
ACOSD(X)REAL(4) XREAL(4)Fortran 2023
DACOSD(X)REAL(8) XREAL(8)GNU extension
See also:

Inverse function:
COSD — Cosine function, degrees
Radians function:
ACOS — Arccosine function