Question

The circle x^2+y^2=1 cut the x axis at p and q. another circle with centre at q and variable radius intersect the first circle at r above the x axis and the cone segment pq at s write the equations of second circle

Answer 1

2x*2+2y*2=1
2x*2+4y=1
4x+4y=1
8xy =1
xy = 8-1
7 xy