How to Express Region D in Polar Coordinates?

[Swapnil]

How would you write the region D given by

$$\[D: \left\{ \begin{array}{l l} \frac{-d}{2} \leq y \leq \frac{d}{2} \\ -\infty < x < \infty \\ \end{array} \right. \]$$

in polar coordinates?

 

[mjsd]

first think about how you write the equation of a straight line in polar coord...

 

[HallsofIvy]

Or, more specifically, how to write x and y in polar coordinates. Replace x and y in the inequalities with those and solve the inequalities.