
Demo · 1:30 min · in Hebrew
The map of trigonometry
Berthold, in the lecture hall: a point travels the unit circle - cosine is how far right, sine how far up - and Noam reads sin 90 off the drawing.

Berthold, in the lecture hall: a point travels the unit circle - cosine is how far right, sine how far up - and Noam reads sin 90 off the drawing.