Alex K. Scribe Post 2/23/11

Today we learned about common angles names. We learned about Θ"Theta", α"Alpha" and β "Beta".

R---> Radius = 1 unit

S----> Arc length

Θ=s/r

Θ can only be in radians using this formula.

Circle=360° or 2πr

Since the central angle and the arc length are the SAME, put the central angle in radians because radians are the same unit as length and the arc length cannot be in degrees.

Learning that the central angle and the arc length are the same is very interesting to me. It seems like it's just a coincidence but it can't be and that's what's so cool about it, that someone took the time and really worked at this and figured it out. It's crazy.