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Home > CALC > Chapter 9 > Lesson 9.4.3 > Problem 9-139

9-139.

The graph below is called a "limaçon." Use your conclusions from problem 9-130 to find its equation. Homework Help ✎

r = a + bsin(θ)

Notice that the points (2, 0) and (6, π/2) are on the graph.
Use these points and substitution to solve for the values of a and b.