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March 29, 2017

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prove identity
Sin2x - sinx/cosx + cos2x= sinx/cosx + 1

  • Math - ,

    You typed it incorrectly, you must mean:

    (sin(2x) - sinx)/(cosx + cos(2x)) = sinx/(cosx + 1)

    LS = (2sinxcosx - sinx)/(cosx + 2cos^2 x - 1)
    = sinx(2cosx -1)/( (2cosx - 1)(cosx+1) )
    = sinx/(cosx + 1)
    = RS

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