39°41′-24°45′=
39°41′-24°45′=
51°49′+24°21′= 39°41′-24°45′= 23°13′42″*3= 12°13′/4=
35°35′-25°45′=?180°-(48°39′40″+67°41′35″)=?
计算:48°39′+67°41′.
计算:48°39′+67°41′=______;90°-78°19′40″=______;21°17′×5=______
帮解四道计算题48°39′+67°41′=_________;90°-78°19′40〃=___________;21°
77°24′+34°45′
请教初一的几道数学题12°36′56〃+45°24′35〃79°45′-61°48′49〃63°21′39秒÷3好的追加
2.28°= ° ′ ″ 39°24′36″= ° 43°18 ′54 ″ +27°29 ′25″= ° ′ ″
计算:①36°27′38〃+133°41′54〃=___________②100°-37°59′45〃=________
180°-(48°39′40″+67°41′35″)
180°-48°39′40〃-67°41′35〃等于多少