1.

If the tangent at P(at^(2),2at) to theparabola y^(2)= ax intersects X-axis at A and the normal at P meets it at B then area of triangle PAB is

Answer»

`4A^(2)|t|sqrt(1+r^(2))`
`2A^(2)|t|(1+r^(2))`
`4a^(2)|t|(1+t^2)`
`(2a^(2)(1+t^(2)))/(|t|)`

ANSWER :B


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