DEGREES() and RADIANS() Function in SQL Server

1. DEGREES() Function :
The DEGREES() function converts a value in radians to degrees.

Syntax :

DEGREES(number)

Parameter : Required. A numeric value.
number : It is a numeric value.
Returns : It returns a value whose data type matches the data type of numeric_expression.

Example-1 :
Converts a radian value into degrees.

SELECT DEGREES(1);

Output :

57

Example-2 :
When the argument holds a fraction.

SELECT DEGREES(2.7);

Output :

154.698604685322294472

Example-3 :
When the PI() function is the argument.

SELECT DEGREES(PI());

Output :

180.0

Example-4 :
When the argument passed is an expression.

SELECT DEGREES(PI() / 4);

Output :

45.0

2. RADIANS() Function :
The RADIANS() function converts a degree value into radians.

Syntax :

RADIANS(number)

Parameter : Required. A numeric value.
number : It is a number in degrees.
Returns : It returns the same type as numeric_expression.

Example-1 :
Converts a degree value into radians.

SELECT RADIANS(180);

Output :

3

Example-2 :
When the argument holds a fraction.

SELECT RADIANS(180.0);

Output :

3.141592653589793116

Example-3 :
When the argument holds a negative value.

SELECT RADIANS(-180);

Output :

-3

Example-4 :
When the argument passed is an expression.

SELECT RADIANS(180 / 3);

Output :

1