Ptolemy made significant contributions to trigonometry through his work "Almagest," where he compiled and expanded upon earlier Greek and Babylonian astronomical knowledge. He introduced the use of chords in a circle, establishing a systematic way to calculate trigonometric values, which laid the groundwork for future developments in the field. His chord table, which related angles to their corresponding chord lengths, was a precursor to the sine and cosine functions used today. Ptolemy's methods greatly influenced both Islamic and European mathematics, shaping the study of trigonometry for centuries.
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,
The main contribution for which Ptolemy is famous is his discovery that the earth revolved around the sun. This was known as the heliocentric theory (and it competed with Catholic Church teaching of the time, which held that the earth was the center of the solar system or geocentric).