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Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = (7cost)i + (7sint)j + (17t)k, Ostsn

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Find the curve's unit tangent vector. Also, find the length of the indicated portion of the curve. r(t) = (7cost)i + (7sint)j + (17t)k, Ostsn Find the curve's unit tangent vector. T (t) = The length of the curve is 21 14 It (Type an exact answer, using it as needed.)

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