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The length of focal chord to the parabol...

The length of focal chord to the parabola `y^(2)=12x` drawn from the point (3,6) on is __________ .

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Verified by Experts

The correct Answer is:
12
(12) a=2
Comparing point (3,6) with `3t^(2),6t)`, we have t=1. Then
Length of focal `=(t+(1)/(t))^(2)=3(1+1)^(2)=12`
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CENGAGE PUBLICATION-PARABOLA-NUMERICAL VALUE TYPE
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