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FermatPell
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Homework Statement
Imagine that you are lost in the desert. You are equipped with a compass. You can use your compass to measure angles, but not the distances. There is a road (going from east to west) and you're going northwards. Suddenly, you spot a truck (on a road, going to west) at angle theta with respect to north. In which direction should you run to maximize chances of stopping the truck (the truck stops instantly if you block the road so it can't go any further).