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sin 2(180/7)+sin 4(180/7)+sin8(180/7) =? needs full proof!!!!!

  1. sin 2(180/7)+sin 4(180/7)+sin8(180/7) =?    needs full proof!!!!!

Grade:11

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
4 years ago
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