1.

If the tangent and normal to a rectangular hyperbola x^(2) -y^(2) =a^(2)cut off interceptsa_1and a_2on one axis andb_1 and b_2on the other then

Answer»

`a_1a_2=b_1b_2`
`a1b_2=a_2b_1`
` a_1b_2+a_2b_1=0`
`a_1a_2+b_1b_2=0`

ANSWER :4


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