Consider the following. ₂ (t) = (30, ², ³), ₂(t) = (sin(t), sin(St), 4t) Find r(t) and r2(t). r'₂ (²) = The curves r(t) = (3t, +², +³) and r₂(t) = (sin(t), sin(5t), 4t) intersect at the origin. Find their angle of intersection, 8, correct to the nearest degree.

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