Answer: option C. 43.9°
Explanation:
Refer to the diagram. The tension in the two strings is equal Tâ=Tâ=T = 3 N
The strings support a frame weighing, W= 4.26 N
We will write the tension in the strings as the sum of their horizontal and vertical components.
The horizontal components balance each other and cancel out.
Tâ cos Ξ = Tâ cos Ξ Â
On the other hand, The vertical component would support the weight of the frame.
2 T sin Ξ = W
2 à 3 N à sin Ξ = 4.16 N
sin Ξ = 0.693
â Ξ = sin â»Âč(0.693)  = 43.9°
Hence, the angle made by two wires with the horizontal is 43.9°.
