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Finding Tangent Vectors and Lengths In Exercises 1-8, find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. 7. r(t)=(t cost)i +(t sin t)j + (2√2/3) +³/2k, 0 ≤1≤ π Instructions Include at least one relevant graph and while you may utilize Maple to work the problem, clearly identify and describe the method and steps to evaluate the problem as if one were using pencil and paper. include the problem statement, clearly labeled mathematical work, clearly labeled and relevant plots, and explanations for all (mathematical work, plots, and conclusions). include a paragraph sharing what you have learned and any difficulties you found at bottom of file