+776 \(\tau = 2\pi = 2 * \pi\)
\(\pi = \tau/2\)
1 * Degree = 1/360 * full circle
1 * Minute = 1/60 * Degree
1 * Second = 1/60 * Minute = 1/3600 * Degree
\(\pi/2 * Rad = 1/4 * fullcircle\)
\(\pi Rad = 1/2 * fullcircle\)
\(2\pi Rad = fullcircle\)
\(2\pi r = \tau r = Circumfrence = C\)
\(\pi r^2 = \tau/2 r^2 = Area = A\)
