Test the Polar Equation for Symmetry with Respect to the Polar

question 76

Multiple Choice

Test the polar equation for symmetry with respect to the polar axis, the pole, and the line $\theta = \pi / 2$ . $r ^ { 2 } = 9 \cos 2 \theta$
I $\text { symmetric about the polar axis }$
II $\text { symmetric about the pole }$
III $\text { symmetric about the line } \theta = \pi / 2$

• A)I only
• B)I and II
• C) I and III
• D)II and III
• E) I, II, III

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