In ` A B C ,(a+b+c)(b+c-a)=k b c` if `k<0` (b) `k >0` `=4`

If in a triangle ABC,(a+b+c)(b+c-a)=k.bc, then :k 6c.0 4

If, in a triangleABC, (a+b+c)(b+c-a)=kbc , then k lies in the interval

If a!=b!=c\ a n d\ |{:(a, b, c), (a^2,b^2,c^2), (b+c, c+a, a+b):}|=0 then a+b+c=0 b. a b+b c+c a=0 c. a^2+b^2+c^2=a b+b c+c a d. a b c=0

If a+b+c= 0 , then ((a+b)/(c ) + (b+c)/(a) + (c+ a)/(b)) ((c )/(a+b) + (b)/(a+c) + (a)/(b+c)) = ?

If a+b+c= 0 , then (a+b)/(c ) + (b+c)/(a) + (c +a)/(b) = ?

If a+b+c= 0, then the value of ((a+b)/c + (b+c)/a + (c+a)/b) ((a)/(b+c) + b/(c+a) + c/(a+b)) is :