One major contribution was that of the Pythagorean Theorem. a^2 + b^2 = c^2
Trigonometry
It's similar to Pythagoras Theorem and Trigonometry.
Pythagoras was the most pivotal mathematician in the area of trigonometry. His pythagoras theorem literally redefined the way people studied right angled triangles.
Trigonometry and the Pythagoras theorem were used in the pyramids.
It was Pythagoras
Use Pythagoras' theorem
Yes, you would need Pythagoras and trigonometry.
Pythagoras' theorem Trigonometry Pythagorean triples
Trigonometry is used to find the properties of triangles and Pythagoras' theorem is used to find the lengths and angles of right angle triangles.
Trigonometry has been developed over centuries, and was not discovered per-se by any one person. One might say that Pythagoras is the father of trigonometry because the Pythagorean theorem is so central to trigonometric theory, but many cultures were aware of the Pythagorean theorem before Pythagoras was even born.
By using trigonometry or Pythagoras' theorem
Thales, Democritus, Pythagoras, Aristotle, Archimedes, Euclid, Erastosthenes, Hipparchus,