JEE Advanced 2012 Mathematics question

The locus of the mid-point of the chord of contact of tangents drawn from points lying on the straight line 4x − 5y = 20 to the circle is

Answer: (A)

Solution

For a point on the line, the chord of contact is . The chord with mid-point (h, k) is . These are the same line, so $ = =

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-026053