
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A light ray falls at an angle $\alpha = 30^{\circ}$ on the front surface of a flat parallel glass plate. The refractive index of the glass is $n = 1.5$. By what angle from the direction of the incident ray is the ray that is reflected off the rear surface of the plate and exits back through the front surface deviated?

Present the answer in LaTex format: \boxed{Your answer}
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