问题标题:
56°2′÷6+35°39′40〃
问题描述:
56°2′÷6+35°39′40〃
李茂林回答:
56°2′÷6+35°39′40〃
=【(54+2)°+2*60〃】÷6+35°39′40〃
=54°÷6+2*60′÷6+2*60〃÷6+35°39′40〃
=9°20′20〃+35°39′40〃
=44°59′60〃
=45°
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