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the equation of the chord of contact of the pair of tangents drawn to the ellipse `4x^2+9y^2=36` from the point `(m ,n)` where `mdotn=m+n ,m ,n` being nonzero positive integers, is (a)`2x+9y=18` (b) `2x+2y=1` (c)`4x+9y=18` (d) none of these

A

`9x+32y=144`

B

`32x-9y=144`

C

`32x+9y=144`

D

none of these

Text Solution

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The equation of the chord of contact of tangents drawn from `(2,-1)` to the hyperbola `16x^(2)-9y^(2)=144` is `32x+9y=144`.
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