Oracle PL/SQL Tutorial/Numerical Math Functions/COS

COS(1415926)

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

COS(1415926)

SQL> select COS(90 * 3.1415926) from dual;
COS(90*3.1415926)
-----------------
                1

Using the COS function to find the cosine of 60 degrees

SQL>
SQL> -- create demo table
SQL> create table myTable(
  2    value1           NUMBER(3),
  3    value2           NUMBER(3),
  4    value3           NUMBER(3)
  5  )
  6  /
Table created.
SQL>
SQL> -- prepare data
SQL> insert into myTable(value1,value2, value3) values (30,60,90)
  2  /
1 row created.
SQL> select * from myTable
  2  /
    VALUE1     VALUE2     VALUE3
---------- ---------- ----------
        30         60         90
SQL>
SQL> SELECT COS(value2*2*3.1416/360) FROM myTable
  2  /
COS(VALUE2*2*3.1416/360)
------------------------
              .499997879
SQL>
SQL>
SQL>
SQL> -- clean the table
SQL> drop table myTable
  2  /
Table dropped.