Question: If () = (), then the curve r = () is symmetric with respect to the (choose the correct answer): (a) x-axis. (b) y-axis. (c)

If ƒ(−θ) = ƒ(θ), then the curve r = ƒ(θ) is symmetric with respect to the (choose the correct answer):
(a) x-axis. 

(b) y-axis. 

(c) origin.

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