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If (1−cot5∘)(1−cot10∘)(1−cot15∘)⋯(1−cot40∘)=2k, then the value of k is |
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Answer» If (1−cot5∘)(1−cot10∘)(1−cot15∘)⋯(1−cot40∘)=2k, then the value of k is |
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