2点25分时针和分针中间是几度,4点40分时针和分针中间是几度,7点27分时针和分针中间是几度?
问题描述：
2点25分时针和分针中间是几度,4点40分时针和分针中间是几度,7点27分时针和分针中间是几度?
算式
答
2点25分时针和分针中间是几度?
(25-10-25*(5/60))*(360/60)
=(15-25*(1/12))*6
=(15-25/12)*6
=90-12.5
=77.5度
4点40分时针和分针中间是几度?
(40-20-40*(5/60))*(360/60)
=(20-40*(1/12))*6
=(20-40/12)*6
=120-20
=100度
7点27分时针和分针中间是几度?
(35-27+27*(5/60))*(360/60)
=(8+27*(1/12))*6
=(8+27/12)*6
=48+13.5
=61.5度