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Two tangents are drawn from the point (-...

Two tangents are drawn from the point (-2,-1) to the parabola `y^(2)=4 x .` If `alpha` is the angle between these tangents, then `tan alpha=`

A

3

B

`(1)/(3)`

C

2

D

`(1)/(2)`

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The correct Answer is:
A
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