mathematics: Greek trigonometry and mensuration
respects, was primarily due to Hipparchus (2nd century bce), whose work was consolidated...…
Did Hipparchus invent trigonometry?
Trigonometry was probably invented by Hipparchus, who compiled a table of the chords of angles and made them available to other scholars. Chords are closely related to sines.
How did Hipparchus discover trigonometry?
Hipparchus produced a table of chords, an early example of a trigonometric table. He did this by using the supplementary angle theorem, half angle formulas, and linear interpolation. ... Hipparchus calculated the length of the year to within 6.5 minutes and discovered the precession of the equinoxes.
