An angle's initial ray points in the 3-o'clock direction and its terminal ray rotates counterclockwise. Let $\theta$ represent the angle's measure (in radians).
a. If $\theta = 0.3$, what is the terminal ray's slope?
b. If $\theta = 1.77$, what is the terminal ray's slope?
c. Write an expression (in terms of $\theta$) that represents the terminal ray's slope.