8. The tangent line to the curve 1 r(t) = i+tj-tk 2 -t at the point...

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8. The tangent line to the curve 1 r(t) = i+tj-tk 2 -t at the point P(1, 1, -1) intersects the line defined by the parametric equations * = 2+ 3t, y = -11 - t, z = 23 + 2t Determine the acute angle between these lines at their point of intersection. Express in degrees to 2 decimal places. 8. The tangent line to the curve 1 r(t) = i+tj-tk 2 -t at the point P(1, 1, -1) intersects the line defined by the parametric equations * = 2+ 3t, y = -11 - t, z = 23 + 2t Determine the acute angle between these lines at their point of intersection. Express in degrees to 2 decimal places.