Mathematics, 29.11.2019 15:31 trinidymwilga

The diagram shows rays of light from a point source, p, that reach a detector, d, along two paths. one path is a straight line, while the other is bent by reflection off a mirror. what is the value of b, correct to one decimal place? assume that all the points in the diagram lie in the same plane.

5.4

4.2

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2.8

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