Question

If a circle cuts a rectangular hyperbola xy = c2 in A, B, C, D and the parameters of these four points be t1t2t3 and t4 respectively. Then

Solution

Correct option is

t1t2 t3t4 = 1

 

Circle is x2 + y2 = a2, hyperbola is xy = c2,

      

SIMILAR QUESTIONS

Q1

 

Find the range of ‘a’ for which two perpendicular tangents can be drawn to the hyperbola from any point outside the hyperbola

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Q2

Find the hyperbola whose asymptotes are 2x – y = 3 and 3x + y – 7 = 0 and which passes through the point (1, 1).

Q3

The locus of a variable point whose distance from (–2, 0) is  times its distance from the line , is

Q4

A variable straight line of slope 4 intersects the hyperbola xy = 1 at two points. The locus of the point which divides the line segment between these two points in the ratio 1 : 2 is

Q5

Let P and , where , be two points on the hyperbola . If (h, k) is the point of intersection of the normal’s at P and Q, then k is equal to

Q6

If x = 9 is the chord of contact of the hyperbola x2 – y= 9, then equation of corresponding of tangents is

Q7

The locus of the mid-point of the chord of the circle x2 + y= 16, which are tangent to the hyperbola 9x2 – 16y= 144 is

Q8

The angle between lines joining origin to the points of intersection of the line  and the curve y2 – x2 = 4 is

Q9

The locus of the middle point of the chords of hyperbola 3x2 – 2y2 + 4x – 6y = 0 parallel to y = 2x is

Q10

The equation of the conic with focus at (1, –1), directrix along – y + 1 = 0 and with eccentricity  is