Scientists and engineers often use polar equations to model the motion of satellites in Earth's orbit. Let's consider a satellite whose orbit is modeled by the equation r = 22800/(4 - cos(θ)), where r is the distance in miles between the satellite and the center of the Earth, and θ is the angle shown in the following figure.
a) For what angle θ is the satellite closest to Earth?
b) Find the height of the satellite above the Earth's surface for this value of θ.