Question

48°59′+57°38′等于多少 78°-47°34′45″和12°34′×5等于多少

谢谢 求过程

Answer 1

48°59′+57°38′
=48°+57°+59′+38′
=105º+97'
=106º37'

78°-47°34′45″
=77°60'-47°34′45″
=77°59'60''-47°34′45″
=30º25'15''

12°34′×5
=60°170′
=60°+120'+50'
=62º50'

追问

请问25.5°÷4等于多少 谢谢

追答

25.5°÷4

=25°30'÷4
=6°+1/4°+7'+2/4'
=6°+1/4*60'+7'+2/4*60''
=6°+15'+7'+30''
=6º22'30''

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Answer 2

48°59′+57°38′
=48°+57°+59′+38′
=105º+97'
=106º37'

78°-47°34′45″
=77°60'-47°34′45″

Answer 3

62º50'