# Graph the sets of points whose polar coordinates satisfy the

Graph the sets of points whose polar coordinates satisfy the given polar equation.
The given polar equation is written as follows:
$$\displaystyle-{\frac{{\pi}}{{{2}}}}\le\theta\le{\frac{{\pi}}{{{2}}}},{1}\le{r}\le{2}$$

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Sculd1987

Consider the polar coordinates as P(r, 0).
Here, ris the directed distance from origin Oto point Pand $$\theta$$ is the directed angle from initial ray to OP.
From the given equation, the value of $$\theta$$ varies from $$-\frac{\pi}{2}\ to\ \frac{\pi}{2}$$ and r varies from 1 to 2.
Polar point traces a circle when ris fixed at constant value and it traces a straight line when $$\theta$$ is fixed at constant value.
From the analysis, draw the sets of points whose polar coordinates satisfy the given polar equation as shown in
Figure 1.