Circular Cross Sections

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Circular Conic Section

If the conic is an circle, e=0. This implies

[math]e=\frac{\sin (\beta)}{\sin (\alpha)}=\frac{\sin (25^{\circ})}{\sin (90-\theta)}=0[/math]


Using the relation

[math]sin(90^{\circ}-\theta)=cos(\theta)[/math]


[math]\frac{sin (25^{\circ})}{0}=cos( \theta) =\infty[/math]


The sector angle will never be perpendicular to the plane of the light cone, so this is not a physical possibility.




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