We have $\tan(\theta) = \frac{4}{3}$, so $\theta = \arctan(\frac{4}{3}) = 36.87$ degrees. Similarly, we calculate the angle $\alpha$ using the given dimensions. We have $\tan(\alpha) = \frac{4}{3}$, so $\alpha = \arctan(\frac{4}{3}) = 56.3$ degrees.
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