Person walks 25.0deg north of east for 3-km. how far would, Ask an Expert

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Q. A person walks 25.0° north of east for 3-km. How far would another person walk due north and due east to arrive at the equal location?

Q. A horizontal beam of light enters a 45-90-45 prism at the center of its long side. The emerging ray moves in a direction that is 34 degrees below horizontal. What is the index of refraction?

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