Interpret the value as degrees and designate the degrees in the DMS format by pressing the button labeled "2nd" -- which provides for the alternative button function -- and "Angle."
Check the screen. You should see "Angle" followed by "1: °," the first option---Degree Notation.
Set the Angle mode to "Degree." Calculators are all a little bit different but on the Texas Instruments TI-83 Plus, choosing the first option sets the value as "Degree Notation;" the second option sets "DMS Minute" notation, the third option sets "Radian" notation and the fourth option displays as "degree/minute/second." You can also use the degree symbol "°" to designate an angle, or list of angles as degrees.