To be fair, I only solved that by looking for answers with identical cosines with the answers that must be right because they're in all choices.
Actually, I just took the time to think about it and actually go through working with solving it, and that's pretty clever.
When both sides are equal, they're equal to the square root of 2. Yay.
Actually, I have the urge to write stuff down now...just a sec...
Well, I can get two of the answers by going the long way that involves the arccosine, but am having a trickier time figuring out how you would deduce that there are four answers, even if they're pretty uch the same thing bout one trip around the circle later. If I didn't know there had to be four answers, I'm not sure I'd even be aware of the other two.
I mean, it makes sense that going around another 2
pi makes sense and stuff since it can be safely done without making 3x greater than 3
pi[/i[. I just...dunno, it doesn't really seem intuitive for some reason.
