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How do calculators calculate trig function?

  1. Nov 24, 2013 #1
    Hi I was wondering how calculators calculate trigonometric functions. Do they use taylor polynomials(if so what order) or what? any help appreciated.
     
  2. jcsd
  3. Nov 24, 2013 #2

    SteamKing

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  4. Nov 24, 2013 #3

    D H

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    And range reduction algorithms combined with minimax polynomials are even faster.

    A computer is more likely to use range reduction algorithms combined with minimax polynomials, a calculator, CORDIC. Calculators use CORDIC because it reduces chip size. Computers use range reduction and minimpax polynomials because they are fast and accurate. *Nobody* in their right mind uses Taylor series.
     
  5. Nov 25, 2013 #4
    could you send me a link DH? I did google it but nothing I could see off a cursory look.
     
  6. Nov 25, 2013 #5

    AlephZero

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  7. Nov 25, 2013 #6

    D H

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  8. Nov 25, 2013 #7
    Thanks, is there a place that online that i can learn from? i don't want to buy a book on it.
     
  9. Nov 25, 2013 #8
    you guys are great I always wondered how calculators do calculations, where did you guys learn about these books? was it in school or by word of mouth? do these books reflect your age? 1960's computer scientists? lol
     
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