90°-52°24′45″等于多少,要结果啊.
问题描述：
90°-52°24′45″等于多少,要结果啊.
129°39′44″+25°8′16″等于多少
答
90°-52°24′45″
=89°59′60″-52°24′45″
=37°25′15″
129°39′44″+25°8′16″
=154°47′60″
=154°48′