QUESTION 9 Determine whether the tests for symmetry detect symmetry with respect to a. The polar axis. Replace \((r, \theta)\) by \((r, -\theta)\). b. The line $\theta = \frac{\pi}{2}$. Replace \((r, \theta)\) by \((r, \pi - \theta)\). c. The pole. Replace \((r, \theta)\) by \((-r, \theta)\). $r^2 = 16\cos 2\theta$ a. Yes b. Yes c. Inconclusive a. Inconclusive b. Yes c. Yes a. Yes b. Inconclusive c. Yes a. Yes b. Yes c. Yes
Added by -Ngeles E.
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To do this, we can rewrite the equation as r^2=16cos(π/9) since 20° is equal to π/9 radians. Show more…
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