Oracle Built In Functions:ACOS function
In Oracle PL/SQL ACOS Function Returns the arc cosine of input . Inputs are in the range of -1 to 1, and outputs are in the range of 0 to pi and are expressed in radians.
Syntax
ACOS(NUM)
Example
SELECT ACOS(.3)”ArcCosine” FROM DUAL;
ArcCosine
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1.26610367