90°-54°48′6″等于 47°40′37″+34°45′等于

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90°-54°48′6″等于 47°40′37″+34°45′等于
90°-54°48′6″等于 47°40′37″+34°45′等于

90°-54°48′6″等于 47°40′37″+34°45′等于
90°-54°48′6″
=89º+60'-54º-48'-6''
=(89º-54º)+(59'-48')+(60''-6'')
=35º+11'+54''
=35º11'54''
47°40′37″+34°45′
=47º+40'+37''+34º+45'
=(47º+34º)+(40'+45')+37''
=81º+(60'+25')+37''
=81º+1º+25'+37''
=82º25'37''