Object Details maker Illinois Tool Works Inc. Description In the mid-twentieth century, American tool manufacturers sometimes distributed trigonometry tables that included advertisements for their ...

By Michael Irving August 25, 2017 Plimpton 322, a 3,700-year old clay tablet, has been found to be the world's oldest and most accurate trigonometric table UNSW/Andrew Kelly View 2 Images ...

A typical modern trig table. The ancient Babylonians had an advantage over our current counting system because they use base-60, instead of the base-10 system that we use.

I think this is one way a calculator could work. It could have a trig table in memory and just interpolate the answer. I will check in a little bit. Trig Method 2: Series Expansion ...

During his life, roughly dating to 120 B.C., he famously created a table of chords drawn from the center of a circle that resulted in angles from which he derived trigonometric formulas.