To determine the true bearing of $B$ from $A$, we’ll analyze the information given:

1. Figure Analysis:

   • $\angle NAB = 50^\circ$ (bearing of $B$ from $A$ relative to north).
   • $\angle ABC = 103^\circ$.
   • $\angle BCA = 48^\circ$.

2. True Bearing of $B$ from $A$:

   • The true bearing is the angle measured clockwise from the north line at $A$.
   • Here, the bearing is already provided directly as $50^\circ$.

Thus, the answer to question 7 (the true bearing of $B$ from $A$) is: 50 degrees.

Would you like more details or have any further questions?

Related Questions:

1. What is the bearing of $A$ from $B$ based on the given information?
2. How can we calculate the bearing of $C$ from $B$ using trigonometric rules?
3. What trigonometric rules apply to finding bearings in non-right triangles?
4. Can the true bearing of $C$ from $A$ be determined with the given angles?
5. How would the bearing change if $\angle NAB$ were increased?

Tip:

When solving for bearings, always measure clockwise from north and check if you can directly use given angles without needing extra calculations.