questions below:

Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = 613i + 2+3j + 3+ k 1sts2 The curve's unit tangent vector is (Type an integer or a simplified fraction.) The length of the indicated portion of the curve is units. (Simplify your answer.)t Find the arc length parameter along the curve from the point where t= 0 by evaluating the integral s = I|v(1:)| d1. Then nd the length of the indicated portion of the curve. 0 r(t)=(4+3t)i+(7+2t)j+(5-3t)k, -1StsO The arc length parameter is s(t) = . (Type an exact answer, using radicals as needed.) The length of the indicated portion of the curve is :|. (Type an exact answer, using radicals as needed.) Find T, N, and k for the plane curve r(t) = - 6 In(sect)i - 6tj,