Question 4.7: Draw the curve traced out by r = 3, 0° ≤ θ ≤ 180°....
Draw the curve traced out by r = 3, 0° ≤ θ ≤ 180°.
Step-by-Step
Here r is fixed at 3 and varies from 0° to 180°. As θ varies a semicircle is traced out. Figure 4.17 illustrates this.
\text { At } \mathrm{P}, \theta=0^{\circ} \text {, while at } \mathrm{Q}, \theta=180^{\circ} \text {. }
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