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13 October, 07:28

The law of reflection states that the angle of incidence equals the angle of reflection. Define the angle of incidence in terms of a line normal to the sureface. (Hint) think about how the law of reflection relates to the angle of incidence and the line normal to the surface.

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  1. 13 October, 08:41
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    I do not know this answer ... anyone else?
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