Asked by ghost

Find the angle between the forces given the magnitude of their resultant. (Hint: Write force 1 as a vector in the direction of the positive x-axis and force 2 as a vector at an angle θ with the positive x-axis. Round your answer to one decimal place.)
Force 1: 2700 pounds
Force 2:1100 pounds
Resultant Force:3600 pounds

Answered by Reiny
make your sketch, you should end up with a triangle with sides given
(the 3600 is the diagonal of the corresponding parallelogram)

using the cosine law, find the angle opposite the 3600, it should be a large
obtuse angle. Once you have that, use your parallelogram properties to find
the angle between the two forces.
Answered by ghost
i got 138.7° as final answer. is it correct?
Answered by Reiny
Yes, that is the angle from the cosine law calculation,
but you wanted the angle between the two forces.
Look at your diagram and see that that angle must be 180 - 138.7
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