Question

aflati masurile unghiurilor unui triunghi efg daca sunt invers proportionale cu numerele 0,25 0,1(6) 0,125

Answer 1

{a,b,c}i.p.{1/4,15/90,125/1000}
a*(1/4)=k
a/4=k
a=4k
b*(15/90)=k
15b/90=k
b=90k/15(inversul fractiei)
b=6k
c*(125/1000)=k
125c/1000=k
c=1000k/125(innversul fractiei)
c=8k
a+b+c=180
4k+6k+8k=180
18k=180
k=180:18
k=10
a=10*4
a=40°
b=10*6
b=60°
c=10*8
c=80°
Proba:
40°+60°+80°=180°