T-SQL - COS() Function

The T-SQL (Transact-SQL) COS() function returns trigonometric cosine of an angle (angle should be in radians).

Syntax

COS(x)

Parameters

`x`	`Required.` Specify the angle in radian.

Return Value

Returns the trigonometric cosine of an angle.

Example 1:

The example below shows the usage of COS() function.

SELECT COS(0);
Result: 1

SELECT COS(1);
Result: 0.5403023058681397

SELECT COS(-1);
Result: 0.5403023058681397

SELECT COS(2);
Result: -0.4161468365471424

SELECT COS(-2);
Result: -0.4161468365471424

SELECT COS(PI());
Result: -1

Example 2:

Consider a database table called Sample with the following records:

Data	x
Data 1	-10
Data 2	-5
Data 3	0
Data 4	5
Data 5	10

The statement given below can be used to calculate the trigonometric cosine value of column x.

SELECT *, COS(x) AS COS_Value FROM Sample;

This will produce the result as shown below:

Data	x	COS_Value
Data 1	-10	-0.8390715290764524
Data 2	-5	0.28366218546322625
Data 3	0	1
Data 4	5	0.28366218546322625
Data 5	10	-0.8390715290764524

❮ T-SQL Functions