VOR 1 Degree Error RNAV

This is an $RA=60D$ question, with $R$ being your range from the beacon, $A$ the angle between your selected track and your QDMQDM —Magnetic bearing from an aircraft to a beacon or station, and $D$ being your cross track distance.

Firstly, rearrange to get $D = \frac{RA}{60}$.The variable $A$ is simply 1 in this case.

The cross track distance will be the same (though on opposite sides) irrespective of whether you are 1° left or right of the selected track. As ever, watch out for the examiner giving question data or answers in units other than nm.