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If tan2∘⋅tan2017∘⋅tan2019∘tan2019∘−tan2017∘−tan2∘=a, then the value of tan−1a(in degrees) is |
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Answer» If tan2∘⋅tan2017∘⋅tan2019∘tan2019∘−tan2017∘−tan2∘=a, then the value of tan−1a(in degrees) is |
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