COS

Syntax

Description of the illustration cos.eps

Purpose

COS returns the cosine of n (an angle expressed in radians).

This function takes as an argument any numeric data type or any nonnumeric data type that can be implicitly converted to a numeric data type. If the argument is BINARY_FLOAT, then the function returns BINARY_DOUBLE. Otherwise the function returns the same numeric data type as the argument.

See Also:

Table 2-8 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