Returns the cosine of the angle in radians given by its argument.
COS( numeric-expression )
numeric-expression The angle, in radians.
This function converts its argument to DOUBLE, performs the computation in double-precision floating-point arithmetic, and returns a DOUBLE as the result. If the parameter is NULL, the result is NULL.
SQL/2008 Vendor extension.
The following statement returns the value of the cosine of an angle 0.52 radians.
SELECT COS( 0.52 );