Physics vectors ASAP! Fast 10 points!?

Need it tomorrow, please answer ASAP.

Two tugboats are towing as barge. Each exerts a force of 5.0 tons, and the angle between two ropes is 30º. Find the resultant force exerted on the barge.

I have another question here: http://answers.yahoo.com/question/index?qid=20131101215247AA7g4Sr

Thanks!
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