50度22分*2+92度22分15秒/5 等于多少
1个回答

1°=60′ 1′=60″

50°22′*2=100°44′

92度22分15秒/5=18.4°4.4′3″

18.4°=18°+0.4*60′=18°24′

18°24′+4.4′=18°28.4′

28.4′=28′+0.4*60″=28′24″

18°28′24″+3″=18°28′27″

原式=100°44′+18°28′27″=128°72′27″=129°12′27″