MathDB

8

Part of 1992 India Regional Mathematical Olympiad

Problems(1)

One on octagon

Source: Indian RMO 1992 Problem 9

10/15/2005
The cyclic octagon ABCDEFGHABCDEFGH has sides a,a,a,a,b,b,b,ba,a,a,a,b,b,b,b respectively. Find the radius of the circle that circumscribes ABCDEFGH.ABCDEFGH.
geometrycircumcirclesymmetrytrigonometrytrig identitiesLaw of Cosines