An air traffic controller is looking at a radar screen with the control tower at the origin.
a. If the path of an airplane can be modeled by the equation
![676_b7206d89-e7a5-4717-8815-d82ec4765882.png](https://secure.tutorsglobe.com/CMSImages/676_b7206d89-e7a5-4717-8815-d82ec4765882.png)
then what are the polar coordinates of the plane when it comes the closest to the tower?
b. Sketch a graph of the path of the plane.