Whatever message this page gives is out now! Go check it out!
ACos
Last update:
May 18, 2026
Description
Arccosine function. The arccosine is the angle whose cosine is number.
Returns
The arccosine, in radians, of a number.
Category
Function syntax
ACos(number)
See also
Parameters
| Parameter | Description |
number | Cosine of an angle. The value must be between -1.0 and 1.0, inclusive. |
Usage
The range of the result is 0 to p. To convert degrees to radians, multiply degrees by p/180. To convert radians to degrees, multiply radians by 180/p.
Example
<cfscript>
number=0.5;
writeOutput(acos(0.5)); // Returns 1.04719755
</cfscript>
We're glad. Tell us how this page helped.
We're sorry. Can you tell us what didn't work for you?
Share additional feedback to help us improve.
0/255
|
