If `a^(2),b^(2)` and `c^(2)` are in AP, then cotA, cotB and cotC are i – InterviewSolution

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1.	If `a^(2),b^(2)` and `c^(2)` are in AP, then cotA, cotB and cotC are inA. A.PB. G.PC. H.P.D. A.G.P.
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