" Show that cor "(A)/(2)*cot(B)/(2)" ,evt "(C)/(2)" are in A.P iff "a,b" ,c are in A.P "

If cot.(A)/(2)+cot.(B)/(2)+cot.(C)/(2) are in A.P , then prove that a, b, c are in A.P

In Delta ABC , if cot "" (A)/(2) , cot "" ( B)/(2) , cot "" (C )/(2) are in A.P., then a,b,c are in

In any Delta ABC,cot((A)/(2)),cot((B)/(2)),cot((C)/(2)) are in A.P.

In any !ABC ,If cot(A/2),cot(B/2),cot(C/2) are in A.P.,then a,b,c are in

In any Delta ABC , If cot ""A/2 , cot ""B/2 ,cot ""C/2 are in AP, then a,b,c are in (A) A.P, (b)G.P., (c)H.P., (d)NONE OF THESE

In any Delta ABC , cot(A/2),cot(B/2),cot(C/2) are in A.P. , then

In Delta ABC, if cot""A/2,cot""B/2,cot""C/2 are in A.P. then a,b,c are In

If the sides a,b,c of a triangle ABC are in A.P., prove that cosA "cot" (A)/(2) , cosB "cot" (B)/(2), cosC "cot" (C)/(2) are also in A.P.

If a, b, c are in A.P then cot(A/2),cot(B/2),cot(C/2) are in