How does the period of a pendulum change with amplitude, and what are the approximate period values for different angles?

Step 2: Analyze the relationship between period and angle.
From the graph, for small angles (approximately $10^\circ$ to $30^\circ$), the period remains relatively constant. The period in this range is about $1.5 \text{ cm} \times 0.1 \text{ s/cm} = 0.15 \text{ s}$.
As the angle of displacement increases beyond $30^\circ$, the period of oscillation begins to increase.
For example, at $\theta = 45^\circ$, the period is approximately $1.7 \text{