In triangle ABC, if cosA+2cosB+cosC=2,t ...

In triangle ABC, if `cosA+2cosB+cosC=2,t h e na ,b ,c` are in (A) A.P. (B) G.P. (C) H.P. (D) none of these

A

A.P.

B

H.P.

C

G.P.

D

A.G.P.

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A

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