A boy of mass \( 40 \mathrm{~kg} \) is hanging from a horizontal branch of a tree. The tension i...

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A boy of mass \( 40 \mathrm{~kg} \) is hanging from a horizontal branch of a tree. The tension in his arms is minimum when the angle between the arms is :-
(1) \( 0^{\circ} \)
(2) \( 90^{\circ} \)
(3) \( 120^{\circ} \)
(4) \( 180^{\circ} \)
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