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If the tangents to y^2=4ax at the point ...

If the tangents to `y^2=4ax` at the point `(at^2,2at)` where `|t|>1` is a normal `x^2-y^2=a^2` at the point `(asectheta,a tan theta)`, then t=

A

`-cosex theta`

B

`-sec theta`

C

` 2 tan theta`

D

`2 cos theta`

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The correct Answer is:
A, C
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