Syntax of ACOS Function :
ACOS (float_expression)
float_expression is a float or real number between -1 to 1. If you specify value outside this value then it returns an error.
Return type of ACOS is float data type.
Examples of ACOS Function :
Example 1 : Use of ACOS function in select clause
SELECT ACOS(0.20)
Output
1.36943840600457
Above example returns angle in radians for specified cosine value 0.20 .