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Thread: Babylonian scholars may have invented Trigonometry

  1. #11
    tWebber 37818's Avatar
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    Just yesterday (8-28) on a radio talk show (Larry Elder) a guest mathematician Martin Magid, a professor of mathematics at Wellesley College, explained that the Babylonian clay tablet used what we call Pythagorean triples and a base 60 numbering system. That is what I had understood.

    An image of the tablet. Plimpton_322.jpg
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    tWebber 37818's Avatar
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    Here is a link to a PDF about the tablet:
    http://www.sciencedirect.com/science...n.pdf&_valck=1
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  3. #13
    Troll Magnet Sparko's Avatar
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    Quote Originally Posted by 37818 View Post
    Just yesterday (8-28) on a radio talk show (Larry Elder) a guest mathematician Martin Magid, a professor of mathematics at Wellesley College, explained that the Babylonian clay tablet used what we call Pythagorean triples and a base 60 numbering system. That is what I had understood.

    An image of the tablet. Plimpton_322.jpg
    It's like a Flintstone spreadsheet.

  4. Amen Teallaura amen'd this post.
  5. #14
    tWebber 37818's Avatar
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    Quote Originally Posted by Sparko View Post
    It's like a Flintstone spreadsheet.
    Yeah. And it is not trig. It is a table of what we think of as Pythagorean triples but 100's of years before Pythagoras.
    . . . the Gospel of Christ, for it is [the] power of God to salvation to every [one] believing, . . . -- Romans 1:16.

    . . . that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures: . . . -- 1 Corinthians 15:3, 4.

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    tWebber shunyadragon's Avatar
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    Quote Originally Posted by 37818 View Post
    Yeah. And it is not trig. It is a table of what we think of as Pythagorean triples but 100's of years before Pythagoras.
    It is generally accepted as primitive form of trig, probably developed in engineering buildings.
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    I do not know, therefore everything is in pencil.

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    tWebber 37818's Avatar
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    Quote Originally Posted by shunyadragon View Post
    It is generally accepted as primitive form of trig, probably developed in engineering buildings.
    Read the PDF. Its author claims, "I show that the popular view of it as some sort of trigonometric table cannot be correct."
    . . . the Gospel of Christ, for it is [the] power of God to salvation to every [one] believing, . . . -- Romans 1:16.

    . . . that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures: . . . -- 1 Corinthians 15:3, 4.

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    tWebber Teallaura's Avatar
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    UPI did a pretty good job explaining it.
    https://www.upi.com/Science_News/201...2181503668755/

    Who knew UPI was still in business?

  9. Amen shunyadragon, stfoskey15 amen'd this post.
  10. #18
    tWebber 37818's Avatar
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    Pythagorean triples can be easily calculated.
    Side A being the short leg of the right triangle. Side B being the long leg. Side C being the hypotenuse, side opposite the right angle.
    Pythagorean theorem being A2 + B2 = C2

    Where the integer difference between C - B = n. Were A / n => an integer value of 2. And A and n must both be either odd or even.

    (A2 - n2) / ( 2 x n) = B and B + n = C.

    So if we make A = 9 and n = 1.

    B = 40 and C = 41.
    Last edited by 37818; 09-27-2017 at 02:19 PM.
    . . . the Gospel of Christ, for it is [the] power of God to salvation to every [one] believing, . . . -- Romans 1:16.

    . . . that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures: . . . -- 1 Corinthians 15:3, 4.

    Whosoever believeth that Jesus is the Christ is born of God: . . . -- 1 John 5:1.

  11. #19
    tWebber shunyadragon's Avatar
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    Quote Originally Posted by 37818 View Post
    Pythagorean triples can be easily calculated.
    Side A being the short leg of the right triangle. Side B being the long leg. Side C being the hypotenuse, side opposite the right angle.
    Pythagorean theorem being A2 + B2 = C2

    Where the integer difference between C - B = n. Were A / n => an integer value of 2. And A and n must both be either odd or even.

    (A2 - n2) / ( 2 x n) = B and B + n = C.

    So if we make A = 9 and n = 1.

    B = 40 and C = 41.
    True in today' math, but what's the point?
    Glendower: I can call spirits from the vasty deep.
    Hotspur: Why, so can I, or so can any man;
    But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:

    go with the flow the river knows . . .

    Frank

    I do not know, therefore everything is in pencil.

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    tWebber 37818's Avatar
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    Quote Originally Posted by shunyadragon View Post
    True in today' math, but what's the point?
    No reason other than . . . . The tablet has a table of triangle triples. And I remembered having stumbling upon an easy way to calculate such triples.
    . . . the Gospel of Christ, for it is [the] power of God to salvation to every [one] believing, . . . -- Romans 1:16.

    . . . that Christ died for our sins according to the scriptures; And that he was buried, and that he rose again the third day according to the scriptures: . . . -- 1 Corinthians 15:3, 4.

    Whosoever believeth that Jesus is the Christ is born of God: . . . -- 1 John 5:1.

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