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 `How was the trigonometric table created?`
 ```Hi Mariah, Good day and thanks for your question. There is an excellent webpage ( http://www.cartage.org.lb/en/themes/Sciences/Mathematics/Trigonometry/history/History%20.html ) which gives the development of trigonometry. I'll quote the following from the article : "In the 2nd century BC the astronomer Hipparchus compiled a trigonometric table for solving triangles. Starting with 71° and going up to 180° by steps of 71°, the table gave for each angle the length of the chord subtending that angle in a circle of a fixed radius r. Such a table is equivalent to a sine table." "Ptolemy provided a table of chords for steps of 1°, from 0° to 180°, that is accurate to 1/3600 of a unit. He also explained his method for constructing his table of chords, and in the course of the book he gave many examples of how to use the table to find unknown parts of triangles from known parts. Ptolemy provided what is now known as Menelaus's theorem for solving spherical triangles, as well, and for several centuries his trigonometry was the primary introduction to the subject for any astronomer. At perhaps the same time as Ptolemy, however, Indian astronomers had developed a trigonometric system based on the sine function rather than the chord function of the Greeks." For reference to the earliest written evidence for the development of a trigonometric table see Asger Aaboe, Episodes From The Early History of Mathematics, p. 111. The Earliest Trigonometric Table? http://pup.princeton.edu/books/maor/sidebar_b.pdf If you have any clarifications, please don't hesitate to ask. Thank you for using this service and have a nice day. Warm regards, aditya2k```