Răspuns:
ex 28
16°48'+65°50'=82°38'
71°-24°34'=69°60'-24°34'=45°26'
15°25'+38°41'=44°06'-16°52'=27°14'
14°27'·7=98°189'=101°09'
147°:2=146°60':2=73°30'
85°:2=84°60':2=42°30'
39°24':4=36°204':4=9°51'
1°=60'
ex 29
m(<a)+m(<b)=31°42'+25°30'=56°72'=57°12'
m(<b)-m(<a)=31°42'-25°30'=6°12'
m(<a)·4=25°30'·4=100°120'=102°
90°-m(<a)=90°-25°30'=89°60'-25°30'=64°30'
5·(m<a:2)=5·(25°30':2)=5·(24°90':2)=5·12°45'=60°225'=63°45'
(4·<b):3=(4·31°42'):3=124°168':3=126°48':3=42°16'
Sper ca te-am ajutat
