Recent content by barrycarter

Actually, w is only a unit vector if u and v are perpendicular, although this may've been given in the problem.

I've been searching for weeks. This is the absolute best and shortest answer I've found. I added it to stackoverflow.com: http://math.stackexchange.com/questions/383711/parametric-equation-for-great-circle/390013#390013 Have you considered visiting there to answer questions?