180°-103°24′28″-30°54″=
问题描述：
180°-103°24′28″-30°54″=
答
180°-103°24′28″-30°54″
=179°59'60''-103°24′28″-30°54″
=76°25'32''-30°54″
=76°24'92''-30°54″
=46°24'38''