ACOS is one of the vital Numeric/Math functions of Oracle. It is used to get the arc cosine of a number. The ACOS function is supported in the various versions of the Oracle/PLSQL, including, Oracle 12c, Oracle 11g, Oracle 10g, Oracle 9i and Oracle 8i.
Syntax:
ACOS ( number )
Parameters: number: It is used to specify the number to get the arc cosine value of.
Example 1:
ACOS (1) |
Output:
0
Explanation: The Arc Cosine means the inverse of the cosine. The arc cosine value of 1 is 0 radian, and so is the result.
Example 2:
ACOS (0.5) |
Output:
1.04719755
Explanation: The Arc Cosine means the inverse of the cosine. The arc cosine value of 0.5 is 60 degrees i.e, 1.04719755 radians, and so is the result.
Example 3:
ACOS (-0.5) |
Output:
2.0943951
Explanation: The Arc Cosine means the inverse of the cosine. The arc cosine value of -0.5 is 120 degrees i.e, 2.094395 radians, and so is the result.
