| Oracle9i SQL Reference Release 2 (9.2) Part Number A96540-02  | 
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sin::=
 SIN returns the sine of n (an angle expressed in radians).
The following example returns the sin of 30 degrees:
SELECT SIN(30 * 3.14159265359/180) "Sine of 30 degrees" FROM DUAL; Sine of 30 degrees ------------------ .5