in Pset #3, problem 4, can anyone explain the answer to part (c.)? How can there be an "m" in their solution, when m=tan(alpha) and they explicitly state that in this case, (alpha)=0 ?
Tan(0)=0, so all "m"s should just be 0, right? So what's going on?

Question

in Pset #3, problem 4, can anyone explain the answer to part (c.)?  How can there be an "m" in their solution, when m=tan(alpha) and they explicitly state that in this case, (alpha)=0 ?
Tan(0)=0, so all "m"s should just be 0, right?  So what's going on?

anonymous · Answer

Neeevermind, they weren't that clear about (alpha) only being zero in the initial "check" part of the problem.