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Conic sections question the question is in the image it is a one integer type question

Conic sections question the question is in the image  it is a one integer type question

Question Image
Grade:12

1 Answers

Arun
25763 Points
2 years ago
Dear Student
 
answer will be 0
 
as in y^2 = 4a x
 
length of focal chord = 4a cosec^2 theta
 
now 
 
8/7 cosec^2 theta = 4/7
 
cosec theta = 1 / sqrt(2)
 
which is not possibke hence no foca chord of such length can be drawn

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