Angles

@NikiNiki Said

Well yes, that's right. 2pi is 360?, and pi/2 = 90?. While they may be cute,

like me, 8)

they are neither acute, obtuse, or reflex.

I think of the tetrahedral angle as acos(-1/3), so it's arctangent would be its arcsine divided its arcosine or (2/3)*2^.5 divided by (-1/3), which is indeed -2*2^.5 or 109.47?. I don't know why Excel returns -70.53?.

The ? is alt 167 on my keyboard.

@TheMatrix Said

I see that... I prefer sec^-1 though (I get to use whole numbers more)