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Walter

If the angles of incidence is 30 the angle of reflection will be ?

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Answer:

The angle between the mirror and the incident ray is 30 degrees. The sum of the angle of incidence and this angle (30) makes a right angle. So, the angle of incidence is 90 - 30 = 60 degrees. As the angle of incidence and the angle of reflection are equal, both angles equal 60 degrees.

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Ernest
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