hipparchus
He defined the spherical triangle
There is no Contribution of Thales in the field of trignometry.........
An important contribution by Menelaus of Alexandria was his works on geodesics.
Centuries ago, Islam created the mathematics of 'Trigonometry'.
Ptolemy's major contribution to trigonometry was his work on chords in a circle, which led to the development of the trigonometric functions sine, cosine, and tangent. He compiled a table of chords that facilitated trigonometric calculations and navigational measurements. Ptolemy's work influenced the development of trigonometry in the medieval Islamic world and later in Europe.
nothing
hipparchus
He defined the spherical triangle
He introduced coordinated geometry
There is no Contribution of Thales in the field of trignometry.........
spherical and plane trigonometry? :p
Aristolte and Ptolemy sorry if i did not spell it right
An important contribution by Menelaus of Alexandria was his works on geodesics.
Centuries ago, Islam created the mathematics of 'Trigonometry'.
Thales, Democritus, Pythagoras, Aristotle, Archimedes, Euclid, Erastosthenes, Hipparchus,
Bartholomaeus Pitiscus is best known for his book called Trigonometria which was first published in Heidelburg in 1595. It consists of work on plane and spherical trigonometry. The book had the first recorded mention of the word "trigonometry".