SinCosTan
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A reference companion to the museum — curated topic sections that go deeper on the subjects behind the collection. Every entry, image, and fact is drawn from Wikipedia and Wikimedia Commons.
Foundations
The building blocks of trigonometry — the right triangle and the unit circle, angles and their measure, and the theorem and early astronomers that started it all.
14 entriesFunctions & Graphs
The six circular functions and the waves they trace — sine, cosine, and tangent, periodic motion, amplitude and frequency, and the oscillations they describe.
12 entriesIdentities & Theorems
The relationships that make trig powerful — the Pythagorean and angle-sum identities, the laws of sines and cosines, and the mathematicians who proved them.
12 entriesTrigonometry in the World
Where the angles go to work — navigation and surveying, astronomy and its instruments, sound and music, and the engineering that relies on them.
14 entries