We can use the given dimensions to find this angle. The vertical distance between B and C is 6 m, and the horizontal distance between A and C is 3 m + 7 m = 10 m. Therefore,
$$ \tan(\theta) = \frac{6}{10} = \frac{3}{5} $$
$$ \theta = \arctan(\frac{3}{5}) \approx
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