123.38°=123°(0.38*60)'=123°22.8'=123°22'(0.8*60)"=123°22'48"(15又(3/4))° =15.75°= 15°(0.75*60)'=15°45'51°25′48〃=51°(25+48/60)′=51°25.8′=(51+25.8/60)°=51.43°128°20′42〃=128°(20+42/...