A 60 Kg Box Is Held at Rest by Two Ropes

A 6.0 kg box is held at rest by two ropes that form 30° angles with the vertical.An external force F acts vertically downward on the box.The force exerted by each of the two ropes is denoted by T.A force diagram,showing the four forces that act on the box in equilibrium,is shown in the figure.The magnitude of force F is 410 N.The magnitude of force T is closest to:

A) 271 N
B) 235 N
C) 188 N
D) 376 N
E) 470 N