Hyperbola

Section: Mathematics

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Question : 90 of 92

Marks: +1, -0

For the Hyperbola ‌

x2

cos2α

−‌

y2

sin‌2α

=1, which of the following remains constant when α varies =?

[AIEEE 2007]

abscissae of vertices
abscissae of foci
eccentricity
directrix.

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