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Find the values of $P$ and $\theta$.
Mathematics 9709 · AS & A Level · Forces and equilibrium
Forces and equilibrium — practice question
Four coplanar forces of magnitudes $20\text{ N}$, $P\text{ N}$, $3P\text{ N}$ and $4P\text{ N}$ act at a point in the directions shown in the diagram. The system remains in equilibrium.