If a,b,c are in A .P and `a^(2),b^(2),c^(2)` are in H.P ,then `b^(2)`=
(A) `(ca)/(2)` (B) 2ca (C) `-(ca)/(2)` (D) -2ca

If a^(2)+2bc,b^(2)+2ca,c^(2)+2ab are in A.P.then

If a,b,c are in H.P and ab+bc+ca=15 then ca=

If a^(2),b^(2),c^(2) are in A.P.then show that: bc-a^(2),ca-b^(2),ab-c^(2) are in A.P.

If a,b,c in R and a^(2)+(5)/(2)b^(2)+c^(2)=2ab+bc+ca, then then a+2b+2c may be

If a^(2) +b^(2) +c^(2) = ab + bc + ca then (a+b)/(c ) + (b+c)/(a) + (c+a)/(b) =?

If a^(2) +b^(2) +c^(2) = ab + bc + ca then (c )/(a+b) + (b)/(a +c)+ (c )/(a+b) = ?

If a+b+c=0 and a^(2)+b^(2)+c^(2)=1, then (a) ab+bc+ca=(1)/(2)( b) ab+bc+ca=(1)/(2)( c) a^(4)+b^(2)+c^(4)=(1)/(2)( d) a^(4)+b^(4)+c^(4)=(3)/(2)

sin ((CA) / (2)) = (ca) / (b) cos ((B) / (2))

If a,b,c are in G.P.then prove that (a^(2)+ab+b^(2))/(bc+ca+ab)=(b+a)/(c+b)