Law 5

If maslul was more that one hundred and eighty degrees, subtract it from three hundred and sixty degrees and find out its parallax correction. For example, if maslul was two hundred degrees, subtract it from three hundred and suxty, and one hundred and sixty degrees will be left. And we already made known that parallax correction for one hundred and sixty degrees is fourty two minutes, and so is the parallax correction for two hundred - fourty two minutes.