Math, asked by Vamprixussa, 1 year ago

....................................................................................................................................................................................................................................................................................................................................................PLEASE ANSWER,..................................................
Prove that (1+cos\frac{pi}{10} )(1+cos\frac{3pi}{10} )(1+cos\frac{7pi}{10} )(1+cos\frac{9pi}{10} ) = \frac{1}{16}

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Answered by rishu6845
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Answered by channaisuperking04
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