COS( ) function

Returns the cosine of an angle expressed in radians, with a precision of 15 decimal places.

Syntax

COS(radians)

Parameters

Name	Type	Description
radians	numeric	The measurement of the angle in radians.

Output

Numeric.

Examples

Basic examples

Returns 0.500000000000000 (the specified number of radians):

COS(1.047197551196598)

Advanced examples

Using degrees as input

Returns 0.500000000000000 (the cosine of 60 degrees):

COS(60 * PI( )/180)

Rounding to 3 decimal places

Returns 0.500 (the cosine of 60 degrees, rounded to 3 decimal places):

DEC(COS(60 * PI( )/180),3)

Remarks

Performing the Mantissa Arc Test

The three trigonometric functions in Analytics – SIN( ), COS( ), and TAN( ) – support performing the Mantissa Arc Test associated with Benford's Law.

Converting degrees to radians

If your input is in degrees you can use the PI( ) function to convert the input to radians: (degrees * PI( )/180) = radians. If required, you can round or truncate the return value using the DEC( ) function.

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ACL Scripting Guide 14.1