E Homework: Section.. Question 5, 13.3.7 Part 1 of 2 Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = ( - 3t cos t)i + (3t sin t)j + (212 )t k OstsxE Homework: Section.. Question 7, 13.3.9 HW Score: 72.73%, 8 of 11 points O Points: 0 of 1 Save Find the point on the curve r(t) = (5 sin t)i + (5 cost)j + 12tk at a distance 65x units along the curve from the point (0,5,0) in the direction of increasing arc length. . . . . The point is( (Type exact answers, using it as needed.)Homework: Sectio... Question 8, 13.3.11 > HW Score: 72.73%, 8 of 11 points @ Part1 of2 0 Points: 0 of 1 t Find the arc length parameter along the given curve from the point where t =0 by evaluating the integral s(t) = I|v(r)| (it. Then nd the length of the indicated portion 0 I! of the curve r(t) = 8cost i + 83in ti + 5t k, where 0 S t S . 6 The arc length parameter along the curve, starting at t = 0 is s(t) = D. (Tuna an exact anWQI' IlQinn radical: 99 naertnrt \\