Q8 part b ii in this PDF: http://www.madasmaths.com/archive/iy...apers/c2_t.pdf
Solution to the question is here: http://www.madasmaths.com/archive/iy..._solutions.pdf
Dont understand last bit of this circles question Watch
- Thread Starter
- 01-05-2016 04:52
Last edited by LelouchViRuge; 01-05-2016 at 08:42.
- 01-05-2016 08:38
- 01-05-2016 08:45
You have worked out in the first part that the centre of C1 is at (9, -k/2) and it has radius . You then work out that C2 has centre at (1,1) with radius 6. You can therefore work out the length of the line joining the centres, and from thence work out what value of k is consistent with the circles just touching as shown.