Răspunsuri

2014-04-22T21:51:35+03:00
A,b,c- unghiuri
a+b+c=180
a=3k
b=15k
c=18k

3k+15k+18k=180
36k=180
k=180:36
k=5

a=3*5=15 grade
b=15*5=75 grade
c=18*5=90 grade=> ABC este dreptughic