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## Homework Statement

Find the angle between the x axis and the force F2, and the magnitude of the resultant force?

## Homework Equations

The equation of the triangle:

a(squared) = b(squared) + c(squared) - 2bc cos A

## The Attempt at a Solution

What I did was that I said that since the angle between the f1 and the negative x-axis is 70 degrees. Then the angle with the +y axis should be 20 degrees, and therefore if we make the whole two forces as a triangle and solve using the cosine rule, we should get the value of the resultant force, but after wasting countless amounts of paper, I still haven't got a solution? Any help will be greatly appreciated!