1.4x57°18' =1.4*57°+1.4*18' =79.8°+25.2' =79°+0.8*60'+25'+0.2*60'' =79°+48'+25'+12'' =80°13'12'' 80度13分12秒把度的小数部分乘以60化成分,结果大于60分的,就向前进1度把分的小数部分乘以60化成秒,结果...