Hey FRND here is UR ANS....TanA+tanB/cotA+cotB = tanAtanBLHS,,,tanA+tanB/1/tanA+1/tanB(tanA+tanB)/(tanA+tanB/tanAtanB)(tanA+tanB)/(tanAtanB/tanA+tanB)tanAtanB ..... Hence proved.Hope it HELPS youʕ•ٹ•ʔ✌✌Thankyou☺☺Arya❤
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