Find the unit tangent vector T and the curvature K for the following parameterized curve. r(t) = (4 cos t,4 sint 2t Choose the correct answer for the unit tangent vector of r(t). 2/2 22 O A. T(1) = sint, cost, 3 22 2/2 cos t, O B. T(t)= sint, 2/2 sin t, 3 2/2 cos t 3 OC. T()= 22 sint, 3 2/2 D. T()= cost, 3

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