COS

Compatibility

COS(a)
Engine	OK	Alternative
ingres	Yes
mysql	Yes
oracle	Yes
postgres	Yes
sqlserver	Yes

COS

COS(f) returns the cosine of f where f is in radians.

  COS(3.14159/3) -> 0.5 

schema:scott

 DROP TABLE angle

 CREATE TABLE angle(
  func VARCHAR(10),
  angle INTEGER
  id INTEGER
INSERT INTO angle VALUES (COS,0,1);
INSERT INTO angle VALUES (COS,45,1.732051/2);
INSERT INTO angle VALUES (COS,45,1/1.41421);
INSERT INTO angle VALUES (COS,60,1/2);
INSERT INTO angle VALUES (COS,90,NULL);
INSERT INTO angle VALUES (SIN,0,0);
INSERT INTO angle VALUES (SIN,30,1/2);
INSERT INTO angle VALUES (SIN,45,1/1.41421);
INSERT INTO angle VALUES (SIN,60,1.732051/2);
INSERT INTO angle VALUES (SIN,90,1);
INSERT INTO angle VALUES (TAN,0,0);
INSERT INTO angle VALUES (TAN,30,1/1.732051);
INSERT INTO angle VALUES (TAN,45,1);
INSERT INTO angle VALUES (TAN,60,1.732051);
INSERT INTO angle VALUES (TAN,90,1/0);

In this example you return the cosine of each of the angles.

SELECT id
 FROM angle
WHERE func = 'COS'

See also

• SIN function
• TAN function
• ATAN function