Question: A rectangle has sides with lengths 18 units and 11 units. Find the angle to one decimal place between the diagonal and the side with

A rectangle has sides with lengths 18 units and 11 units. Find the angle to one decimal place between the diagonal and the side with length of 18 units. Hint: Set up a rectangular coordinate system, and use vectors to represent the side of length 18 units and to represent the diagonal.

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