You don't know where the hydrogen is in respect to the molecule. It is neither dashed or wedged, so determining the configuration isn't possible. By rearranging the molecule where hydrogen is either dashed or wedged (making it dashed saves you a step of reversing the configuration) you can find the way it rotates.
That's one method of determining the configuration. Personally, the way I do it is I "grab" one side and it doesn't move. Then you rotate the molecule to whatever position you want the Hydrogen to assume. In this case, you'd rotate it one time counter-clockwise. This keeps the configuration the same. Try it out on different problems...I think it's a faster method, but we all have our own ways 🙂
