1.

If the tangent drawn to the parabola y^(2) = 4x at (t^(2) , 2t)is the normal to the ellipse 4 x^(2) + 5y^(2) = 20 at ( sqrt (5) cos theta , 2 sin theta ), then

Answer»

`5t^(4) + 4t^(2) = 1`
`5/t^(4) + 100/t^(2) = 1`
`t = sin THETA `
`COS theta = t + 1`

Answer :A


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