COS

Syntax

cos::=

Description of the illustration cos.gif


Purpose

COS returns 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.

See Also: Table 2-11, "Implicit Type Conversion Matrix" for more information on implicit conversion

Examples

The following example returns the cosine of 180 degrees:

SELECT COS(180 * 3.14159265359/180)
   "Cosine of 180 degrees" FROM DUAL;

Cosine of 180 degrees
---------------------
                   -1