把度和分分开来计算,还有就是注意是60进位.
21°17′*5+176°52′/3
=21°*5+17'*5+176°/3+52'/3
=105°+85'+58°+172'/3176°=174°+120'
=163°+85'+57'+60"/3 172'=171'+60"
=163°+142'+20" 142'=2°22'
=165°22'20"