Oracle SQL - Function COS function

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Introduction

COS - Returns the cosine of a value.

The COS function takes arguments in radians where, 

radians  = (angle * 2 * 3.1416 / 360)

Using the COS function to find the cosine of 60 degrees:

Demo

SQL>
SQL> SELECT COS(60*2*3.1416/360)
  2  FROM dual;-- ww  w .j a va  2s .  co  m

COS(60*2*3.1416/360)
--------------------
            00000.50

SQL>