Explore College Math, The Square, and more!

Explore related topics

Spherical trigonometry: Three right angles inside a triangle on a sphere

An unknown Babylonian mathematician beat Pythagoras to the discovery of trigonometry by more than 1000 years, claim experts studying the piece. That Babylonian genius marked down the famous theorem that is often associated with the.

Gifs pra aprender matemática (parte 2)

Gifs pra aprender matemática (parte 2)

There are a number of collections that are like this — collections that aim to demonstrate science concepts in a way that is easily digestible.


a box vox round-up of extremely polyhedral egg cartons — structural packaging for nature's "perfect package"

Spherical trigonometry

Spherical Trigonometry (triangles drawn on a sphere) - elucidated by John D.


Octahedron inside hexahedron, with colored projection lines;

Notice how the crank moves in a circle, and the bars — which correspond to sine and cosine — move up and down and side to side in a wave-like formation:

7 Animated GIFs That Will Make You Instantly Understand Trigonometry

Excellent use of the chord theorem (when two chords intersect each other inside a circle, the products of their segments are equal.

Excellent use of the chord theorem! This is so much simpler than the proofs we were presented in high school geometry / pre-calculus. From “Proofs Without Words” by Roger B.