Three forces 9, 12 and 15N acting on a point are in equilibrium. What is the angle between 9N and 15N?
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Answer:
9^2 + 12 ^ 2 = 15 ^2
So angle between 9 and 12 is 90 °
angle between 9 and 15 is θ
Cos θ = 9/15
θ = 53.1 °
Explanation:
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