The ACOS function returns the arc cosine of the argument as an angle expressed in radians. The ACOS and COS functions are inverse operations.
The data type of the result is double-precision floating point. If the argument can be null, the result can be null; if the argument is null, the result is the null value.
The result is greater than or equal to 0 and less than or equal to .
SELECT ACOS(:ACOSINE) FROM SYSIBM.SYSDUMMY1Returns the approximate value 1.49.
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