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     EduGorilla 
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    The equation of the pair of straight lines parallel to the y – axis and which are tangents to the circle x2 + y2 – 6x – 4y – 12 = 0 is :

    Options :-

    1. x2 - 4x - 21 = 0
    2. x2 - 5x + 6 = 0
    3. x2 - 6x - 16 = 0
    4. None of these
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