Prove that (cot Ï/16).(cot 2Ï/16).(cot 3Ï/16)...(cot 7Ï/16)=1
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Prove that (cot Ï/16).(cot 2Ï/16).(cot 3Ï/16)...(cot 7Ï/16)=1
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