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22. The unit tangent vector T and the principal unit normal vector N for the parameterized curve r(t) = (9 cos t,9 sin t, 16t) are shown below. Use the definitions to compute the unit binormal vector and torsion for r(t). T = ( - 9sin t,9cos t, 16) 337 N = ( - cos t, - sin t,0) The unit binormal vector is B = (Type exact answers, using radicals as needed.) The torsion is t = (Type an integer or a simplified fraction.)