Y by HamstPan38825, Adventure10
Let
be a triangle with
,
, and
. Denote the reflections of
across
by
, respectively, and let
be the circumcenter of triangle
. Let
be a point such that
, and let
and
be the midpoints of the major and minor arcs
of the circumcircle of triangle
. Find
.
Proposed by Michael Kural
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
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
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Proposed by Michael Kural