A polar curve is represented by the equation /, = 7 + 4cos 9. Part A: What type of limacon is this curve? Justify your answer using the constants in the equation. Part B: Is the curve symmetrical to the polar axis or the line ? _ _? Justify your answer algebraically. IN Part C: What are the two main differences between the graphs of r, = 7 + 4cos 0 and / = 4 + 4cos 0