The base of a railing for a set of steps leading up to the front door of a house makes an angle of a degrees with he horizontal. Let d(x) be the horizontal distance between the two ends of the base of the railing. If the upper end of the railing is 4 feet higher than the lower end, find the positive number A such that d(x) = A cot x, and ise your function to find the length of the base of the railing if x = 35°. Round your answer to the nearest tenth of a foot. d (x) Base of railing ft

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