code: public static <A extends Number & Comparable<?>> NumberExpression<Double> degrees(Expression<A> num) {
          return Expressions.numberOperation(Double.class, Ops.MathOps.DEG, num);
      }
docs: Create a {@code deg(num)} expression
  
  <p>Convert radians to degrees.</p>
  
  @param num numeric expression
  @return deg(num)