Cosine of 1 degree from the ground up.
23:11
the Holy Trinity of curves
17:26
Los investigadores pensaron que esto era un error (integrales de Borwein)
20:20
exact value of sin(10 degrees)
32:32
Why don't they teach simple visual logarithms (and hyperbolic trig)?
21:26
a very interesting differential equation
23:43
The Most Useful Curve in Mathematics [Logarithms]
10:55
The cleverest definition of cosine.
15:25