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If the tangent at the point (4cos2theta,...

If the tangent at the point `(4cos2theta,16/sqrt11sin2theta)` on the ellipse `16x^(2)+11y^(2)=256` touches the circle `x^(2)+y^(2)-2x=15`, then `theta` =

A

`pmpi/3`

B

`pmpi/6`

C

`pmpi/4`

D

`pmpi/8`

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The correct Answer is:
B
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