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If }x=3 is the chord of contact of the circle }x^2+y^2=81, then the equation of the corresponding pair of tangents is } (1) }x^2-8y^2+54x+729=0 (2) }x^2-8y^2-54x+729=0 3) x^2 + 8y^{2^{}} -54x -729 =0(4) }x^2-8y^2-729=0 |
| Answer» If }x=3 is the chord of contact of the circle }x^2+y^2=81, then the equation of the corresponding pair of tangents is } (1) }x^2-8y^2+54x+729=0 (2) }x^2-8y^2-54x+729=0 3) x^2 + 8y^{2^{}} -54x -729 =0(4) }x^2-8y^2-729=0 | |