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Prove. tanA+tanB÷cotA+cotB=tanAtanB

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CotA=1/TanA and cotB=1/tanB TanA+TanB ÷(1/tanA+1/tanB)1/tanA+1/TanB=tanA+tanB ÷tanAtanB While dividing tanA+tanB cancels and the answer is TanATanB


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