题目

78°-47°34′56″ 12°34′56″ 56°36′=多少度 以上题要有过程
说的好了 我在追加30

提问时间：2021-03-14

答案

78°-47°34′56″
=78°-47°-34′-56″
=31°-34′-56/60'
=31°-2040/60′-56/60'
=31°-2096/60′
=31°-2096/3600°
=30°+3600/3600°-2096/3600°
=30°+1504/3600°
=30°+94/225°
=30又225分之94°
或
78°-47°34′56″
=78°-47°-34′-56″
=31°-34′-56/60'
=31°-34′-0.9333'
=31°-34.9333′
=31°-34.9333/60°
=31°-0.58222°
=30.41777°
12°34′56″
=12°+34′+56/60'
=12°+2040/60′+56/60'
=12°+2096/60′
=12°+2096/60/60°
=12°+131/225°
=12又225分之131°
[=12°+0.58222°=12.58222°]
56°36′
=56°+36/60°
=56°+0.6°
=56.6°