56.6°+72°43′=

56.6°+72°43′=
56.6°+72°43′=

56.6°+72°43′=
56.6°+72°43′=56°36′＋72°43′=128°79′＝129°19′

56.6°+72°43′
=56°24‘+72°43′
=128°67’
=129°6‘

130°19′