A dressing room contains two nearly parallel mirrors separated by a distance of 4.0 m. A person stands 1.5 m from the front of the mirror to view their reflection. Their back side reflects from the other mirror behind them so they can view it in the mirror located in front of them. Therefore, they are able first to see their front side and then their backside reflection. Ideally, the parallel mirrors will produce one image only. Nevertheless, we can still model these particular mirrors to be parallel for the case of this problem. Determine the distance between the person and their backside image.