A yacht is sailing at a constant speed of 510 km-1 in the direction –i-3j. Initially it is at point (-6,10). A beacon is at (0,0) at the centre of a tiny atoll. (c.) If there is a reef of radius 8 km around the atoll, will the yacht hit the reef? Answer: shortest dist=8.85 km, so it will miss the reef. *This is a vector problem * I have no idea what to do. Something to do with perpendicular distance and dot product maybe? Any help appreciated =]

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