Final answer:
For part (b), when a = 0 and b = 1, the equation becomes r = 1.
Step-by-step explanation:
The equation given is r = a*cos(3θ) + b.
For part (b), a = 0 and b = 1. Substituting these values into the equation, we have r = 0*cos(3θ) + 1. Since the cosine of any angle is always between -1 and 1, the result is r = 1. Therefore, the equation becomes r = 1.