Yes, the second question just needs a simple diagram. Don't think too deeply!
The first:
S for 3600 nm takes you to the Equator
E For 3600 nm takes u to 30E
N for 3600 nm takes u back to 60N
W for 3600 nm at .5 (cosine 60 degs) is twice the number of degs, or 90W
Phil
BTW - that was all in the notes
