90度减47度30分42秒除以6等于多少

1个回答

(90° - 47°30′42″) ÷ 6
= (89°59′60″ - 47°30′42″) ÷ 6
= 42°29′18″ ÷ 6
= (42° + 24′ + 5*60″+18″) ÷6
= 7°4′53″