Question

Masurile unhiurilor unui triunghi sunt direcct proportionale cu 3,5, si 7.Aflati masurile lor.

Answer 1

suma unghiurilor unui triunghi este 180grade

A/3=B/5=C/7

A=3B/5

C=7B/5

3B/5+B+7B/5=180 aducem la acesi numitor -5

3B+5B+7B=5*180=> 15B=900=> B=60grade

A=3*60/5=> A=36grade

C=7*60/5=> C=84grade

Answer 2

x/3=y/5=z/7 x=3B/5 z=7B/5 3x/5+y+7z/5=180 3x+5y+7z=5*180=> 15B=900=> y=60grade x=3*60/5=> A=36grade X=7*60/5=> C=84grade