Salina, Tamara, and Uma are working on their homework together. Salina tells her friends that she has $θ = 52^\circ$ for the inverse cosine problem she is working on and asks if they have the same answer. Tamara says she has $θ = 128^\circ$, and Uma volunteers her answer of $θ = 308^\circ$. Is it possible that these are all solutions to the same problem? Justify your answer.