This function is used to calculate the arccosine (or inverse cosine) of a number.
The Acos function returns the value whose cosine is Number.
Acos( [Number] )
Where:
Number is the value to return the arccosine of (between -1 and1).
Rule | Meaning |
|---|---|
| Acos(-1) | Uses the number -1 and calculates the resulting arccosine (inverse cosine). The result is 3.14159265358979. |