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SQL COS Function

COS returns the cosine in radians of the specified angle.

COS, along with SIN and TAN, is one of the primary trigonometric functions.



This example returns the cosine of the specified angle measured in radians.

SELECT COS(0) AS '0 degrees',
       COS(PI()/3) AS '60 degrees',
       COS(PI()) AS '180 degrees'
Result:  1 record
0 degrees 60 degrees 180 degrees
1 .5 -1

Note: PI is a function that returns the value of π (3.14).


Syntax of the COS function.


angle -- a number representing an angle in radians.

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