Saturday 16 February 2013

trigonometry - Sum of sinx+sin3x+sin5x+......sin(2n-1)x

Options are





  1. n/2 cosx- 1sin(nx)/2sinx . cos(n+2)x

  2. n/2.sinx-1/2sin(nx)

  3. n/2.cosx - cos(n+2)x

  4. sinx +sin(nx)

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