suplement= suma a 2 unghiuri=180
a) 47 grade suplementul acestuia=180-47=133 grade
b)
179grade 59minute 60 secunde-48 grade 12 minute=131 grade 11 minute 60 secunde
c) 180-175 = 5grade
d)
179grade 59minute 60 secunde-
120grade 13minute 17 secunde
=59 grade 46 minute 43 secunde