if the tangent at the point (4 cos p...

if the tangent at the point `(4 cos phi , (16)/(sqrt(11) )sin phi )` to the ellipse `16x^(2)+11y^(2) =256` Is also a tangent to the circle `x^(2) +y^(2)-2x=15,` then the value of `phi` is

A

`pm pi/2`

B

`pm pi/4`

C

`pm pi/3`

D

`pm pi/6`

Text Solution

Verified by Experts

The correct Answer is:

C

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ML KHANNA-THE ELLIPSE-PROBLEM SET (2) (Multiple Choice Questions)

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