On the following unit circle, $\theta$ is in radians and $\tan (\theta)=\frac{0.98}{0.2}=4.9$. Without a calculator, evaluate the following expressions to the nearest hundredth or as an exact ratio.

Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: On the following unit circle, $\theta$ is in radians and $\tan (\theta)=\frac{0.98}{0.2}=4.9$. Without a calculator, evaluate the following expressions to the nearest hundredth or as an exact ratio.

Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: On the following unit circle, $\theta$ is in radians and $\tan (\theta)=\frac{0.98}{0.2}=4.9$. Without a calculator, evaluate the following expressions to the nearest hundredth or as an exact ratio.
