How Do You Calculate Rope Tension with a Hanging Boy?

[CyndiRae]

Homework Statement

A boy weighing 400N hangs on the middle of a rope stretched between two trees. The rope sags in such a way that it makes an angle of 170^o at the boy's hands. What is the tension in each rope?

Homework Equations

I'm not sure :S:S

The Attempt at a Solution

Well I drew the question out into a tip-to-tail drawing,
but I'm unsure of what else to do :S

 

[hage567]

Well I don't know what your drawing looks like or if you've got everything labelled properly but you should be able to use trig to solve for the tension.