Question
If x = 9 is the chord of contact of the hyperbola x2−y2=9, then the equation of the corresponding pair of tangents is
Answer: Option B
:
B
If x = 9 meets the hyperbola at (9,6√2) and (9,−6√2).
Then, equations of tangent at these points are 3x−2√2y−3=0 and 3x+2√2y−3=0.
The combined equation of these two is 9x2−8y2−18x+9=0.
Was this answer helpful ?
:
B
If x = 9 meets the hyperbola at (9,6√2) and (9,−6√2).
Then, equations of tangent at these points are 3x−2√2y−3=0 and 3x+2√2y−3=0.
The combined equation of these two is 9x2−8y2−18x+9=0.
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution