Anyway, we're calculating the rotation rate of the sun, its speed in arcsec/sec, and its speed in km/sec. We have to do this in two different locations. The people in my lab (there are only four of us) got really frustrated last time because we calculated the rotation rate at the equator, and our answer was a bit lower. I came up here and tried again with different data--and with sunspots not so close to the edge of the sun, which affected our answer. I win. As soon as I saw that 8.166666666 pi on Maple, I was rejoicing, for I knew that was really close to what I was looking for.
Now to repeat this for a place away from the equator.