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Which equation will produce the graph shown? 4-way >> NS * O r A. Y = 2 cos(39) O B. 3 cose = 2 2 O C. 12 = 9cos(29) O D. 8 = 5 3

Which equation will produce the graph shown? 4-way >> NS * O r A. Y = 2 cos-example-1
User Centril
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1 Answer

20 votes
20 votes

Given:

The graph of a polar function is given.


\begin{gathered} r(\theta)=a\cos k\theta \\ \text{Period of }\cos k\theta=(2)/(k)\pi \end{gathered}

From the graph,


\begin{gathered} k=2 \\ \text{Period of }\cos 2\theta=\pi \end{gathered}

The graph of the polar equation,


r^2=9\cos (2\theta)

Answer: option C)

Which equation will produce the graph shown? 4-way >> NS * O r A. Y = 2 cos-example-1
User Oscar Falmer
by
2.6k points