# ACOSD

Elemental Intrinsic Function (Generic): Produces the arccosine of x.

result = ACOSD (x)

x | (Input) Must be of type real. The | x | must be less than or equal to 1.

## Results

The result type and kind are the same as x and are expressed in degrees. The value lies in the range −90 to 90 degrees.

Specific Name | Argument Type | Result Type
--- | --- | ---
ACOSD 1 | REAL(4) | REAL(4)
DACOSD 1 | REAL(8) | REAL(8)
QACOSD | REAL(16) | REAL(16)
1The setting of compiler options specifying real size can affect ACOSD and DACOSD.

## Example

ACOSD (0.886579) has the value 27.55354.

Parent topic: A to B