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How do you find out if this Parametric equation

x = -2t + 3 ; y = -t - 1 ; z = -3t + 2

Is perpendicular to this parametric equation

x = -2 + 6t ; y = 3 - 6t ; z = -3 - 2t

Thanks

Stephen

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# Find if Parametric equations are perpendicular

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