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4. Use the following information and diagram to answer parts a and b. A reflecting surface is inclined 30 above the horizontal. A wave is

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4. Use the following information and diagram to answer parts a and b. A reflecting surface is inclined 30 above the horizontal. A wave is traveling horizontally and reflects off the surface, as shown below. 30 a) What is the angle of incidence? (1) b) What is the angle between the incident ray and the reflected ray

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