Transcript Slide 1

Hipparchus – “Father of Trigonometry”
• developed the ideas of trigonometry from its
early form explored by the Hellenistic
mathematicians.
Main Concepts
• Supplementary angle
theorem
• Half angle formulas
• linear interpolation
(used to create chord
function)
Menelaus of Alexandria
• Astronomer and Mathematician
• Followed the work of Hipparchus
• Only surviving work is titled
Sphaerica which highlights
mathematical concepts such as
“ the spherical triangle” in relation to
astronomy
• Major Contribution(s): Menelaus Theorem
Main Concept
• Menelaus
Theorem
Claudius Ptolemy
• mathematician, astronomer,
geographer, astrologer,
and poet
• Followed the work of both
Hipparchus as well as Menelaus
• Wrote Almagest, Geography, Quadripartitum
and Tetrabiblos
• Major Contribution(s): Ptolemy's table of
chords, Ptolemy’s theorem
Main Concepts
• Ptolemy's table of chords
• Ptolemy’s Theorem