COS
The COS function calculates the cosine of an angle expression. The result returned by COS is a decimal value with the same dimensions as the specified expression.
Return Value
DECIMAL
Syntax
COS(angleexpression)
Arguments
 angleexpression

A numeric expression that contains an angle value, which is specified in radians.
Examples
Example 752 Calculating the Cosine of an Angle in Radians
This example calculates the cosine of an angle of 1
radian. The statements
DECIMALS = 5
SHOW COS(1)
produce the following result.
0.54030
Example 753 Calculating the Cosine of an Angle in Degrees
This example calculates the cosine of an angle of 60 degrees. Since 1 degree = 2 * (pi) / 360
radians, 60 degrees is about 60 * 2 * 3.14159 / 360
radians. The statement
SHOW COS(60 * 2 * 3.14159 / 360)
produces the following result.
0.50000