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Find the magnitude of the resultant of the three forces and state the direction in which it acts.
Mathematics 9709 · AS & A Level · Forces and equilibrium
Forces and equilibrium — practice question
At point $A$, three coplanar forces with magnitudes $100\,\text{N}$, $50\,\text{N}$ and $50\,\text{N}$ act, as shown in the diagram. The value of $\cos \alpha$ is $\frac{4}{5}$.