Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Relentless****Member**- Registered: 2015-12-15
- Posts: 624

Hi! (:

*Last edited by Relentless (2016-04-23 03:17:41)*

Offline

#2. Two circles of radii *r* and *s* intersect at two points such that at each point of intersection the tangents to the circles are mutually perpendicular. Show that the centres of the circles and the points of intersection lie on a third circle, and find the radius of this circle.

Offline

Pages: **1**