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Two tangent are drawn from the point (-2...

Two tangent are drawn from the point `(-2,-1)` to parabola `y^2=4xdot` if `alpha` is the angle between these tangents, then find the value of `tanalphadot`

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Knowledge Check

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

    A
    3
    B
    `1//3`
    C
    2
    D
    `1//2`

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

    A
    `1//2`
    B
    `1//3`
    C
    2
    D
    3

  • Two tangents are drawn from a point (-4, 3) to the parabola y^(2)=16x . If alpha is the angle between them, then the value of cos alpha is

    A
    0
    B
    `(1)/(2)`
    C
    `(sqrt3)/(2)`
    D
    `(1)/(sqrt2)`

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