Find the size of \(\angle BAC\) in the given triangles. (\(tan \ 38.7^{\circ} = 0.8011\), \(tan \ 69.4^{\circ} = 2.6604\))
Answer:
| \(6.4 cm\) |  |
| \(8 cm\) |
The size of \(\angle BAC\) in the figure (a) is .
| \(26.6 \ cm\) |  |
| \(10 \ cm\) |
The size of \(\angle BAC\) in the figure (b) is .