25 ft. The length L of a long wall is to be approximated. The angle 0, as shown in the diagram (not to scale), is measured to be 59°, accurate to within 0.35°. Assume that the triangle formed is a right triangle. a) What is the measured length of the wall? feet b) Estimate an upper bound for the propagated error using a linear approximation. feet c) What is an upper bound for the percent error? %

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