A scalar numeric function that returns the cosine, in radians, of an angle.

{fn COS(float-expression)}

COS returns the cosine as a FLOAT. The returned value is within the range –1 to 1, inclusive. COS returns NULL if passed a NULL value.

COS can only be used as an ODBC scalar function (with the curly brace syntax).

These examples show the effect of COS on two sines.

SELECT DISTINCT {fn COS(0.52)} AS Cosine
FROM Sample.Person 

returns 0.86781.

SELECT DISTINCT {fn COS(-.31)} AS Cosine
FROM Sample.Person 

returns 0.95233.