The Halley's Comet has an elliptical orbit with an eccentricity of 
.The length of the major axis of the orbit is approximately 35.1 astronomical units. Find a polar equation for the orbit. How close does the comet come to the sun?
?
A. 
Closest point to the sun is 
0.579 astronomical unit.
B.
Closest point to the sun is 
0.579 astronomical unit.
C.
Closest point to the sun is 
0.579 astronomical unit.
D.
Closest point to the sun is 
0.579 astronomical unit.
E.
Closest point to the sun is 
0.579 astronomical unit.
Answer: B
Mathematics
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× 
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A. 
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D. 
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