The DNA molecule comes in the form of a double helix, meaning two helices that wrap around one another. Suppose a single one of the helices has a radius of 6 A (1 angstrom = 10-8 cm) and one full turn of the helix has a height of 31 A. Find the paremetrization r(t) of the helix. r(t) = (6 cos(1), a, b) (Use symbolic notation and fractions where needed.) a= b= Find the arc length L of one full turn of the helix. L=

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