After being abandoned by his crew, Captain Nelson built a raft. The wind is quite steady, at first blowing him due East for 12km and then 12km in a direction 15 degrees south of east. He falls asleep. When he wakes up, he notices the wind is now blowing him gently 69 degrees north of west, and after traveling for 11km in that direction, he's back on the island. Sum of displacement = 0 a: how far as the crow flies, in km, did the wind blow him while he was sleeping? b: assuming the wind blew in the same direction while he was sleeping, what direction in degrees south of west did the wind blow Captain