DEGREES

Convert a number from radians to degrees.

DEGREES(number)

The return type is a DOUBLE PRECISION number.

For example:
premdb=# select degrees(1) from sys.const;
     degrees      
------------------
 57.2957795130823
(1 row)
premdb=# select degrees(avg_att) from team where avg_att>0;
     degrees      
------------------
 3434.53820713221
 1930.29481179574
 641.082476971878
 2377.77484979292
  1411.5388240843
 2184.34429815675
 1844.98139610076
 2515.85767841944
 3096.32122066648
 4313.57005642192
  2850.6942138939
...