Question

【题目】计算:180°-25°28'-77°36'=______.

Answer 1

【答案】76°56'

【解析】

把180°化为179°59′60″，再用度与度，分与分对应相减即可．

180°-25°28'-77°36'=179°59′60″-25°28'-77°36'

=154°32′-77°36'

=153°92′-77°36'

=76°56'

故答案为：76°56'．