Stewart Límite Geométrico

Stewart Límite Geométrico The figure shows a fixed circle C 1 with equation͑ (x-1)² + y²=1 1 and a shrinking circle C2 with radius rand center the origin. P is the point (0,r), Q is the upper point of intersection of the two circles, and R is the point ofintersection of the line PQ and the x -axis. What happens to R as C2 shrinks, that is, as r -->0+ ?