If `a^2 , b^2 , c^2` are in A.P., then prove that `cot A, cot B, cot C` are in A.P.

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

If a^(2),b^(2) and c^(2) be in A.P. prove that cot A,cot B and cot C are in A.P. also.

In any triangle ABC , if a^2,b^2,c^2 are in AP then that cot A , cot B , cot C are in are in A.P.

In DeltaABC , a^(2),b^(2),c^(2) are in A.P. Prove that cotA, cotB, cotC are also in A.P.

If cot A,cot B,cot C are in A.P.then prove that cot(B-A),cot B,cot(B-C) are also in A.P.where A,B,C are any angles.

If a^(2),b^(2),c^(2) are in A.P.,then prove that the following are also in A.P.(i) (1)/(b+c),(1)/(c+a),(1)/(a+b) (ii) (a)/(b+c),(b)/(c+a),(c)/(a+b)

If a^(2)(b+c),b^(2)(c+a),c^(2)(a+b) are in A.P. then prove that a,b,c are in A.P.or ab+bc+ca=0

In a triangle ABC,if sin A sin(B-C)=sin C sin(A-B), then prove that cot A,cot B,cot C are in A.P.

In a triangle ABC,if sin A sin(B-C)=sin C sin(A-B), then prove that cot A,cot B,cot C are in AP