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The area of triangle formed by the tangents from point (3, 2) to hyperbola  and the chord of contact w.r.t. point (3, 2)



Question ID - 153573 | SaraNextGen Top Answer

The area of triangle formed by the tangents from point (3, 2) to hyperbola  and the chord of contact w.r.t. point (3, 2)

1 Answer
127 votes
Answer Key / Explanation : (8) -

(8)

Hyperbola is  or

Equation of tangent is    (1)

It passes through (3, 2)

Or

Solving we get values of  as  and

Equation of tangent (1) for

Or

On taking  sign point  does not satisfy the equation of tangent therefore rejecting  sign. Hence equation of tangent is     (2)

Now equation of tangent (1) for  is  rejecting (+) sign (since taking (+) sign point  does not satisfy this equation)

Hence, equation of tangent is    (3)

Now equation of chord of contact w.r.t. point  is

Or

Or            (4)

Solving (2) and (4);

Solving (3) and (4);

Now vertices of triangle are

 sq. units

127 votes


127