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Equation of a directrix of the ellipse x...

Equation of a directrix of the ellipse `x^2/36+y^2/4=1` is

A

9x-8=0

B

8x-9=0

C

`sqrt2x+9=0`

D

`x+9sqrt2=0`

Text Solution

Verified by Experts

The correct Answer is:
C
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