Returns the cosine of expression.

Syntax

COS ( expression )

Notes

  • COS takes an angle expression and returns the ratio of two sides of a right triangle. The ratio is the length of the side adjacent to the angle divided by the length of the hypotenuse.
  • The expression specifies an angle in radians.
  • The expression must evaluate to an approximate numeric data type.
  • To convert degrees to radians, multiply degrees by Pi/180. To convert radians to degrees, multiply radians by 180/Pi.

Example

This example illustrates the COS function:

select cos(45 * pi()/180) 'Cosine of 45 degrees'
     from sysprogress.syscalctable;
 COSINE OF 45 DEG
---------------- 
0.707106781186548
 1 record selected

Compatibility

ODBC compatible