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The tangent and normal to the ellipse x^...

The tangent and normal to the ellipse `x^2+4y^2=4` at a point `P(theta`) on it meets the major axis in Q and R respectively. If `0

A

`cot^(-1)(2/3)`

B

`cot^(-1)(1/3)`

C

`cot^(-1)(3/4)`

D

None of these

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The correct Answer is:
A
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