About 100 b.c., during the period of the Alexandrian Greeks, the Greek astronomer Hipparchus developed what is today called spherical trigonometry.
The Greek astronomers used spherical trigonometry to determine the time of day, direction of motion, and the positions of ships or reference points. Greek trigonometry flourished in the following centuries, reaching its highest point with the astronomer Menelaus (first century a.d.) and his successor, Ptolemy. Following the decline of Greek civilization about 640 a.d., little progress occurred until the advancement of science and mathematics recommenced during the Renaissance, beginning approximately in 1400.
Hipparchus
Trignometry
hipparcus a greek mathematician
yes
There is no Contribution of Thales in the field of trignometry.........
Greece introduced trignometry
it was discoved in July 19,1799
Hipparchus
Trignometry
Howard Carter discoved tutu carmoon
hipparcus a greek mathematician
=1/2=0.5
yes
europeans
greek
It is the shortened (slang) form of trignometry.
There is no Contribution of Thales in the field of trignometry.........