# In Babylon, a million years before Pitgoras

I once saw a carpenter make two perpendicular cuts in the wood: he took a string over length 000 dm, formed a triangle with sides on lengths 3, 4 and 5 dm, and used a fact about that an angle between operating system smaller sides straight. I don’t know sony ericsson knew why it works, however I bet he didn’t know that the technique was used 4 years ago.

Plimpton 322, some clay tablet found in the excavations of an electronic Mesopotmy dated about 1600 the.C., one of the 2 most famous ancient mathematical documents. It has inscribed a table with 427 electronic lines 4 columns of numbers (in the Babylonian sexagesimal notation) which form Pythagorean triples, that is, integer triples *a*, *t* electronic *d* (for example,

a=3, *udemÃ¦rket*=4 electronic *chemical*=5) such that *a** ^{2}*+

*w*

^{2}=*d*^{2}

.

Most 2 experts believe that I learned is about some list of examples for use in the classroom about class. However the inscription also points to a method of calculating triple dieses more than a million years before Pitgoras! which shows a knowledge of geometry that I thought had been attained in Greece.

A reader drew my attention to another mathematical document from a recently identified Babylon. The piece, some round clay plate called Si.427, information about 1900 a 1600 BC It was excavated in Bagd in 1894, but was reported lost until Australian researcher Daniel Mansfield located it in the Istanbul Archeological Museum.

Yes.427 contains a 2 older examples on the application of trigonometry, to a 2 problems that most motivated the advance of mathematics zero Egypt and Mesopotmy: the redistribution on lands. It is some kind of property register, containing electronic geometric legal information about a piece of land that was divided for half of it to be sold.

given straight. That’s what operating system two sony ericsson documents connect: a practical method of obtaining perpendicularity by constructing triangles whose sides are given lengths by some pythographic triplet, as my carpenter did.

So, operating system problems Practices placed by You.322 can be solved using the theory contained in Plimpton 322. Mansfield suggests that, instead of a list of teaching materials, the latter would actually be some kind of real estate agent glue.