Keplers first law asserts that planets travel in
Chapter 11, Problem 37(choose chapter or problem)
Keplers first law asserts that planets travel in elliptical orbits with the sun at one focus. To find an equation of an orbit, place the pole O at the center of the sun and the polar axis along the major axis of the ellipse (see the figure). (a) Show that an equation of the orbit is where e is the eccentricity and 2a is the length of the major axis.
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