Sweety333 Sweety333
  • 01-10-2017
  • Mathematics
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What is the value of Cos n 2π=???

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mathmate
mathmate mathmate
  • 01-10-2017
If n is an integer, then cos(n(2π))=1.

Take n=0, cos(2
π)=cos(0)=1, n=1, cos(2π)=1, n=2, cos(2(2π))=cos(4π)=cos(0)=1...

If n is not an integer, well, ..... we don't know the value, which depends on the value of n.
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