How to find the angle between F2 and the x axis?

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SUMMARY

The discussion focuses on calculating the angle between the force F2 and the x-axis using the cosine rule from triangle geometry. The user established that the angle between force F1 and the negative x-axis is 70 degrees, leading to a 20-degree angle with the positive y-axis. However, the user struggled to find the resultant force due to insufficient information regarding the angle of F2. The cosine rule equation a² = b² + c² - 2bc cos A is crucial for solving the problem.

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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!
 

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Was there any other information that you have left out? The angle could be anything without extra information.
 
Nope that is all the information given!
 

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