^^Plimpton 322. Terne pitagoriche babilonesi. Babylonian triples.

  1. wp/Plimpton_322
  2. yt/Ancient Babylonian tablet - world's first trig table

  3. yt/Babylonian numbers 1-9
    yt/The remarkable OB (Old Babylonian) sexagesimal system

  4. yt/A new understanding of the OB tablet Plimpton 322
  5. yt/Babylonian Fractions

 

 

why base 60 ?

60 = 2*2*3*5  ha molti fattori-divisori  

2  3 5 2*2 2*3
2*3*5 2*2*5 2*2*3 3*5 2*5

 

2 3 4 5 6
30 20 15 12 10

 

fingers and toes are divided into 3 sectons, 60 total

60 nocche, potrei contare anche solo sulla mano: dorso e palmo

Link

Trigonometria Old Babylonian.