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Mathematics - Parabola Question with Solution | TestHub

MathematicsParabolaChordsMedium2 minPYQ_2020
MathematicsMediumsingle choice

If one end of a focal chordABof the parabolay2=8xis atA12,-2,then the equation of the tangent to it atBis:

Options:

Answer:
B
Solution:

Let12,-2is2t2,4tt=-12

Parameter of other end of focal chord is t=2

 Point is 8,8

 Equation of tangent is 8y-4x+8=0

2y-x=8

Stream:JEESubject:MathematicsTopic:ParabolaSubtopic:Chords
2mℹ️ Source: PYQ_2020

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