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Mathematics - Parabola Question with Solution | TestHub

MathematicsParabolaMiscellaneous/MixedMedium2 min

MathematicsMediumsingle choice

If the lines $(y - b) = m_{1} (x + a)$ and $(y - b) = m_{2} (x + a)$ are the tangents of $y^{2} = 4 a x$ then

Options:

Answer:

C

Solution:

$y = m x + \frac{a}{m}$

$\Rightarrow m^{2} x - 3 y + a = 0, m_{1} \cdot m_{2} = - 1$

Stream:JEESubject:MathematicsTopic:ParabolaSubtopic:Miscellaneous/Mixed

⏱ 2m

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