Find the resultant of an easterly force of 100 N and a southerly force of 80 N acting at 65 degrees to the 100-N force......?!?!?!

Okay, so I absolutely LOVE Physics. The problem is, I was Absent on this portion of the curriculum and cannot understand this. I am not getting a good grade because my teacher has not dealt much with Physics in over 50 years. He is a great teacher and is voluntarily sacrificing a lot of his time to teach us and would greatly appreciate any help. I have waited many years to take a high school Physics class and would not like to tank it now. I have a major exam TOMORROW and need a series of questions answered. If anyone can dedicate some time to aid me at this time, it would be deeply appreciated. :)

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