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Calculate the size of \(\angle BAC\) in the given triangles. (\(tan \ 38.7^{\circ} = 0.8011\), \(tan \ 69.4^{\circ} = 2.6604\))
Answer:
The size of \(\angle BAC\) in the figure (a) is .
The size of \(\angle BAC\) in the figure (b) is .
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