度分秒之间60转化
180°-48°39′40〃-67°41′35
=180°-(48°39′40〃+67°41′35)
=180°-115°80'75''
=180°-116°21'15''
=179°59'60''-116°21'15''
=63°38'45
180°-48°39′40〃-67°41′35〃等于多少
180°-48°39′40〃-67°41′35〃等于多少
数学人气：890 ℃时间：2020-02-03 08:23:47
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