JEE Main 2019 Mathematics question
The locus of the centres of the circles, which touch the circle, externally, also touch the y-axis and lie in the first quadrant, is:
Answer: (B)
Solution
Centre (h, k), radius h: .
The locus of the centres of the circles, which touch the circle, externally, also touch the y-axis and lie in the first quadrant, is:
Centre (h, k), radius h: .