(90°-54°28′12〃)÷6等于多少
问题描述:
(90°-54°28′12〃)÷6等于多少
答
(90°-54°28′12〃)÷6
=(90°-54°24′252〃)÷6
=15°-9°4′42〃
=5°55′18〃