In Oracle/PLSQL, the acos function returns the arc cosine of a number.
Syntax
The syntax for the acos function is:
acos( number )
number is the number used to calculate the arc cosine.
Applies To
For Example
| acos(0.2) | would return 1.36943840600457 |
| acos(0.35) | would return 1.21322522314939 |
| acos(-0.15) | would return 1.72136459957158 |