To find \(\alpha\), we use the vertical component equation:

\(7.3 \sin \alpha = 5.5\)

Solving for \(\alpha\):

\(\sin \alpha = \frac{5.5}{7.3}\)

\(\alpha = \sin^{-1}\left(\frac{5.5}{7.3}\right) \approx 48.9^\circ\)

To find the magnitude of the resultant, we use the horizontal component equation:

\(R = 6.8 - 7.3 \cos 48.9^\circ\)

Calculating \(R\):

\(R \approx 6.8 - 7.3 \times 0.662\)

\(R \approx 6.8 - 4.835\)

\(R \approx 2 \text{ N}\)