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Geometry Elementary Geometry

  1. Oct 8, 2017 #1

    atyy

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    Science Advisor

    Could I get recommemdations for textbooks that start by defining cosine and sine using power series and then recover their geometric properties?

    John Roe's "Elementary Geometry" does that, but it's not in my current university's library.
     
  2. jcsd
  3. Oct 8, 2017 #2

    ISamson

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