Răspuns :
89grade59minute60 secunde - 30 grade 40 minute 15 secunde = 59 grade 19 minute 45 secunde
( complementul )
179 grade 59 minute 60 secunde - 30 grade 40 minute 15 secunde = 149 grade 19 minute 45 secunde
( suplementul )
( complementul )
179 grade 59 minute 60 secunde - 30 grade 40 minute 15 secunde = 149 grade 19 minute 45 secunde
( suplementul )