COS function - Amazon Redshift
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COS function

COS is a trigonometric function that returns the cosine of a number. The return value is in radians and is between -1 and 1, inclusive.

Syntax

COS(double_precision)

Arguments

number

The input parameter is a DOUBLE PRECISION number.

Return type

The COS function returns a DOUBLE PRECISION number.

Examples

To return the cosine of 0, use the following example.

SELECT COS(0); +-----+ | cos | +-----+ | 1 | +-----+

To return the cosine of pi, use the following example.

SELECT COS(PI()); +-----+ | cos | +-----+ | -1 | +-----+