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COS

Syntax

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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 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 2-10, "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

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