a/(b+c)=b/(c+a)=c/(a+b)=(a+b+c)/((b+c)+(c+a)+(a+b))=(a+b+c)/2*(a+b+c)=0.5
a/(b+c)=1/2 => 2a=b+c
b/(a+c)=1/2 => 2b=a+c
c/(a+b)=1/2 => 2c=a+b
a=b=c
Written on Jan. 25, 2020, 10:44 a.m.
a/(b+c)=b/(c+a)=c/(a+b)=(a+b+c)/((b+c)+(c+a)+(a+b))=(a+b+c)/2*(a+b+c)=0.5
a/(b+c)=1/2 => 2a=b+c
b/(a+c)=1/2 => 2b=a+c
c/(a+b)=1/2 => 2c=a+b
a=b=c
Written on Jan. 25, 2020, 10:44 a.m.