O is the center of a circle. AB, CD and EF are three parallel chords of this circle having respective lengths 2, 3 and 4.
It is known that ∠AOB = m, ∠COD = n and, ∠EOF = m+n, where m+n < 180^o

Determine cos m

(In reply to Solution by Bractals)

Ty, Bractals! I confirm having hyperlinked your methodology in my official solution.

Posted by K Sengupta on 2023-02-22 00:39:11