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PROVE THAT : cos π/15 . …

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PROVE THAT : cos π/15 . cos 2π/15 . cos 3π/15 . cos 4π/15 . cos 5π/15 . cos 6π/15 . cos 7π/15 = 1/128
  • 2 answers

Harry Potter 7 years, 4 months ago

it is in rd

Aman Kumar 5 years, 8 months ago

Its easy dude...
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