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# Maths mechanics question help watch

1. Q 15 three forces act upon a particle, which is in equilibrium. if the magnitudes ogmf the forces are 4n, 5n and 6n find the angles between the forces
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4. (Original post by cosford2)
Q 15 three forces act upon a particle, which is in equilibrium. if the magnitudes ogmf the forces are 4n, 5n and 6n find the angles between the forces
If three forces are in equilibrium then they form a vector triangle. You can use the cosine rule to find the first angle and then go from there.

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