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Home > PC > Chapter 11 > Lesson 11.2.1 > Problem 11-73

11-73.

Find the points of intersection for the polar curves r = 2 sin(2θ) and r = 2 cos θ. Homework Help ✎

Set the equations equal to each other (because r = r).

Divide both sides by 2.

Apply the Double Angle Identity for sine.

Set the equation equal to 0 and factor.

Use the Zero Product Property to solve for θ.

Use your values for θ to solve for r.

Verify your answers and that you found all points of intersection by graphing.