Figure 13-6j shows the two polar curves r1 = 5 + 4 cos and r2 = 1 + 6 sin a. Which graph

Chapter 13, Problem T14

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Figure 13-6j shows the two polar curves r1 = 5 + 4 cos and r2 = 1 + 6 sin a. Which graph is which? What special name is given to each graph? b. The graphs cross at = 90. Is this a true intersection? Explain. c. The graphs cross at a point in the first quadrant. Show that this is a true intersection, and find its polar coordinates. Figure 13-6j

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