What is the formula used to calculate the coefficient of friction?
I. μ = tan(θ)
II. F = μ * N
III. A = n * Σ(xi * yi) - Σxi * Σyi / n * Σ(xi^2) - ...
What is the formula used to calculate the coefficient of friction? I. μ = tan(θ) II. F = μ * N III. A = n * Σ(xi * yi) - Σxi * Σyi / n * Σ(xi^2) - (Σxi)^2 a) I and II b) II and III c) I and III d) I, II and III a) I and II b) II and III c) I and III d) I, II and III
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