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For hyperbola x^2sec^2alpha-ycos e c^2al...

For hyperbola `x^2sec^2alpha-ycos e c^2alpha=1,` which of the following remains constant with change in `'alpha'` abscissa of vertices (b) abscissa of foci eccentricity (d) directrix

A

abscissae of vertices

B

abscissae of foci

C

eccentricity

D

directrix

Text Solution

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The correct Answer is:
B
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ARIHANT MATHS-HYPERBOLA-Exercise For Session 1
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