1) Calcule as somas:
a) 12° 25'+40° 13'=
b) 28° 12'+52° 40'=
c) 58°+17° 19'=
d) 21° 15' 40°+7° 12' 5"=
a) 12° 25'+40° 13'=
b) 28° 12'+52° 40'=
c) 58°+17° 19'=
d) 21° 15' 40°+7° 12' 5"=
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B)80°52'
C)75°19'
D)28°27'45''