incircle of triangle inscribed in semicircle (2019 Novosibirsk Oral Geo Oly 8.2)
Source:
April 28, 2021
geometryincirclesemicircle
Problem Statement
The circle is inscribed in a triangle, inscribed in a semicircle. Find the marked angle .
https://cdn.artofproblemsolving.com/attachments/8/e/334c8662377155086e9211da3589145f460b52.png