Returns the arccosine, or inverse cosine, of the specified number. The arccosine is the angle whose cosine is the specified number. The returned angle is given in radians in the range [0…π].
Syntax
 Copy Code
|
|---|
ACOS( Number n ) → Number |
Parameters
- n
- Required. A number representing a cosine, in the range [-1…1].
Remarks
If you want to convert the result from radians to degrees, multiply it by 180/PI or use the DEGREES function.
Example
| Formula
Copy Code
|
|---|
=ACOS(0.5) |
See Also
Function Reference
COS Function
PI Function
RADIANS Function
DEGREES Function