If `a,b,c` are the lengths of the sides of a triangle,then the range of `(ab+bc+ca)/(a^(2)+b^(2)+c^(2))`

If a,b,c are the sides of a triangle then the range of (ab+bc+ca)/(a^(2)+b^(2)+c^(2)) is

a,b,c are the lengths of the sides of a non-degenerate triangle , If k = (a^2 + b^2 + c^2)/(bc + ca + ab) , then

If a,b,c are the sides ofa triangle then the expression (a^(2)+b^(2)+c^(2))/(ab+bc+ca) lies in the interval

a, b, c are the lengths of three sides of a DeltaABC . If a, b, c are related by the relation a^(2)+b^(2)+c^(2)=ab+bc+ca , then the value of (sin^(2)A+sin^(2)B+sin^(2)C) is

If a,b,c are the lengths of sides,BC,CA and AB of a triangle ABC, prove that vec BC+vec CA+vec AB=vec O and deduce that (a)/(sin A)=(b)/(sin B)=(c)/(sin C) .

If a^(2)+b^(2)+c^(2)=ab+bc+ca where a,b,c are the sides of a triangle,then the largest angle of that triangle is

If a, b, c are sides of a triangle, then ((a+b+c)^(2))/(ab+bc+ca) always belongs to