Oracle PL/SQL/Numeric Math Functions/COS

COS(1415926)

SQL> select COS(45 * 3.1415926) from dual;
COS(45*3.1415926)
-----------------
               -1
SQL>

COS() function returns the cosine of the <numeric expression> argument that is passed to it.

 
SQL>
Syntax: COS(<numeric expression>)
SQL>
SQL>
SQL> SELECT COS(2) from dual;
    COS(2)
----------
-.41614684
SQL>
SQL>

COS: Returns the cosine of a value

SQL>
SQL> -- create demo table
SQL> create table TestTable(
  2    ID                 VARCHAR2(4 BYTE)         NOT NULL,
  3    MyName             VARCHAR2(10 BYTE),
  4    MyDate             DATE,
  5    MyNumber           Number(8,2)
  6  )
  7  /
Table created.
SQL>
SQL>
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19960711","YYYYMMDD"),12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19970622","YYYYMMDD"),-12.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19980513","YYYYMMDD"),22.1);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("19990624","YYYYMMDD"),-2.12);
1 row created.
SQL> insert into TestTable (ID, MyName, MyDate, MyNumber) values("1","Alison",to_date("20000415","YYYYMMDD"),2.1);
1 row created.
SQL>
SQL>
SQL> select * from TestTable
  2
SQL> -- COS: Returns the cosine of a value
SQL>
SQL> SELECT COS(MyNumber*2*3.1416/360) FROM TestTable;
COS(MYNUMBER*2*3.1416/360)
--------------------------
                .977709903
                .977709903
                .926528292
                .999315539
                .999328391
SQL>
SQL> drop table TestTable;
Table dropped.
SQL>
SQL>

COS(x): Returns the cosine of x, where x is an angle in radians

SQL>
SQL> --COS(x): Returns the cosine of x, where x is an angle in radians.
SQL>
SQL> select COS(90 * 3.1415926) from dual;
COS(90*3.1415926)
-----------------
                1
SQL>