The point in a lunar orbit nearest the surface of the moon is called perilune and the point farthest from the surface is called apolune.The Apollo 11 spacecraft was placed in an elliptical lunar orbit with perilune altitude 
and apolune altitude 
(above the moon).Find an equation of 
this ellipse if the radius of the moon is and the center of the moon is at one focus.
Definitions:
Components
The individual parts or elements that make up a whole system or compound.
Connective
A word or phrase in language that connects clauses or sentences, or a logical operator that joins propositions.
Coherent
Logically connected or consistent; in physics, waves having a constant phase relationship.
Consistent
Marked by harmony, regularity, or steady continuity; free from variation or contradiction.
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