Find B and T for the space curve below. r(t) = (3 sin 4t)i + (3 cos 4t)j + 5tk 12 cos 4t 12 sin 4t T = N = - K = 48 13 5 13 -j+ 13 k sin 4ti - cos 4tj 169 B= i+ + k το (Type an integer or a simplified fraction.)

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