ARCOS (inverse cosine)

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  1. - 24th September 2009, 18:38 #1
    mjphillips1981's Avatar
    mjphillips1981
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    Default ARCOS (inverse cosine)

    Is it possible to calculate inverse Cosine in PBP?
  2. - 5th October 2009, 14:55 #2
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    any help would be appreciated?
  3. - 5th October 2009, 15:01 #3
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    Hi,

    Calculate, no ...

    Use a retrieve table ( + linearizing ) YES ...

    depends MUCH on the looked for values range.

    But PBP doesn't include any "ARCCOS" function ...

    Alain
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  4. - 8th October 2009, 16:53 #4
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    Quote Originally Posted by mjphillips1981 View Post
    Is it possible to calculate inverse Cosine in PBP?
    Yes, you could use the ATAN function by using a cordic (http://www.picbasic.co.uk/forum/showthread.php?t=10528) include file and calculate for the equation:

    (IF )

    You would need to do some manipulation for the math in a PIC chip though.

    -Walter
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