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Question

The equation of the chord of contacts of tangents drawn from a point (2,−1) to the hyperbola 16x2−9y2=144 is

A
9x+32y=144
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B
32x9y=144
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C
32x+9y=144
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D
none of these
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Solution

The correct option is B 32x+9y=144
The equation of the chord of contacts of tangents drawn from (2,1) to the hyperbola 16x29y2=144 is given by
T=0
16x(2)9y(1)=14432x+9y=144
Hence, option 'C' is correct.

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