Subject:
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RE: basic trigonometric functions on the handyboard..
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 9 Mar 1999 15:46:16 GMT
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Original-From:
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Raymond, Shelby <srr@cherry-SPAMLESSsemi.com>
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Viewed:
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3335 times
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Wouldn't it be easier to just use the cosine function itself?
x = cos y
You know x, but you want to find y.
Pick a y (maybe 45 deg) and calculate the x.
Use successive approximation to determine y within
a tolerance. Almost like calculating a transcendental
equation.
-Shelby
> Dear Berg,
> You can perhaps express cos^-1 in the forms of a Taylor series and
> use that series for finding the approximate value. I have however not
> tried it.
> There is no math function for inverse cosine.Refer to handy board
> manual available el.www.mit.media.edu for details on IC.
> Yours sincerely,
> Nitin
>
> On Tue, 9 Mar 1999, Guy & Gad Berg wrote:
>
> > Hi.
> > We've been trying to build an algorithm which will allow our HB to
> > travel between given points.
> > We need to use the inverse cosine function (cos^-1), how can we do that?
> > Is there a math library which contains this and other trig functions?
> >
> > Thanks,
> > Guy.
> >
> >
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