Figure 2 shows a structure supported at two points A and B. Determine the reactions RA and RB and state the direction of the reactions.

Step 1: Identify the forces and reactions.
The structure is a vertical beam supported at two points:

• Point A: A pin support, which provides horizontal ($R_{Ax}$) and vertical ($R_{Ay}$) reaction forces.
• Point B: A roller support, which provides only a vertical reaction force ($R_B$).

External forces acting on the beam:

1. A force of $10 \, \text{kN}$ acting at $45^\circ$ from the vertical, applied at the top of the beam.
   • Horizontal component ($F_{1x}$): $10 \sin(45^\circ)$ acting to the left.
   • Vertical component ($F_{1y}$): $10 \