Overview
Grammar | ACOS(number) | Returns the arccosine, namely inverse cosine, of a number. The arccosine value is an angle returned in radian format. |
Parameter | number | Cosine of the angle you want. |
Notes
The function supports only one number and returns illegal if more than one numbers are set.
The parameter must range from - 1 to 1. The returned angle value is between 0 and PI. To display the returned angle in degrees, multiply it by 180/PI().
Example
| Formula | Result | Notes |
|---|---|---|
| ACOS(1) | 0 (radian) | |
| ACOS(0.5) | 1.047197551 (Pi/3 radian) | |
| ACOS(0.5)*180/PI() | 60 (degrees) |
