What is the tension in the rope at this point?

[bcarter]

How do you solve this problem?
Arlene is to walk across a high wre strung horizontally between two buildings 10.0meters apart. The sag in in the rope when she is at the mid point is 10 degrees. If her mass is 50 kgs, what is the tension in the rope at this point?

 

[Doc Al]

By identifying all the forces acting on the woman (draw a picture) and then applying the conditions for equilibrium (that the net force on her must be zero).