Definition:
The Oracle COS function calculates the cosine of n (an angle expressed in radians). This function takes as an argument any numeric datatype (or any nonnumeric datatype that can be implicitly converted to a numeric datatype).
If the argument is BINARY_FLOAT, then the function returns BINARY_DOUBLE. Otherwise the function returns the same numeric datatype as the argument.
Example Syntax:
COS(num);
num is the number used to calculate the cosine.
Example Usage:
COS(38) - returns 0.9550736440472949
COS(-27.2) - returns -0.4763180482150152
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