Laws of Motion

Step: Find the value of angle \(\theta\).
The force and the tension in the string are shown in the figure below;  
                       
From the above figure, by using the property of a linear pair we get;
\(60^{\circ}+ 90^{\circ}+\theta^{\circ} = 180^{\circ} \)
\(\Rightarrow \theta^{\circ} = 180^{\circ} – 60^{\circ}- 90^{\circ}\)
\(\Rightarrow \theta^{\circ} = 30^{\circ} \)
Therefore, the value of  angle \(\theta\)  is \(30^{\circ}\).
Hence, option (1) is the correct answer.