Determine whether the tests for symmetry detect symmetry with respect to a. The polar axis. Replace (r,θ) by (r,−θ). b. The line θ= π /2. Replace (r,θ) by (r,π−θ). c. The pole. Replace (r,θ) by (−r,θ). r^2 =9sin2θ a. Yes b. Yes c. Inconclusive a. Yes b. Inconclusive c. Yes a. Inconclusive b. Inconclusive c. Yes a. Inconclusive b. Yes c. Yes