Notice that the rectangular form of the polar equation r

Chapter 9, Problem 45

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Notice that the rectangular form of the polar equation r cos u a is x a. Thus the graph of the polar equation r cos u a is a vertical line with an x-intercept of a. Similarly, the graph of the polar equation r sin u b is a horizontal line with a y-interceptof b. In Exercises 45 and 46, use these observations to graph thepolar equations (a) r cos u 3(b) r sin u 3

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