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

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

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

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

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

If a, b, c are sides of a triangle and a^2+b^2=c^2 , then name the type of triangle. a) Obtuse angled triangle b) Acute angled triangle c) Right angled triangle d) Equilateral triangle