Compute the unit binormal vector and torsion of the curve. r(t) = (10t, 3 cost, 3 sin t) (3, 10 sint, - 10 cos t) V109 10 O A. B(t) = T= 109 (0, 10 cos t, - 10 sin t) 1 О В. В()— V109 109 (0, - 10 cost, - 10 sin t) V109 10 OC. B(t) = 109 (3, - 10 sin t, 10 cos t) 10 O D. B(t) = 109 109

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