Olympiad Geometry Incenter Example 10

[@Imranahmed08]

Can you provide source of your geo problem , becuase I saw in one your video you use trigonometry to solve it but I couldn't able to find a non- trigonometric soln

[@OlympiadGeometry-2024]

I am working on building my personal website and these geometry problems will be posted on the website. Sorry for the inconvenience at this time. The sources of the geo problems are the books and problems I collected 20years ago in China. They are written in Chinese. Although some problems are IMO or from other competitions such as US competitions or Russian competitions, the problems are translated to Chinese. I think for most of the audience it’s difficult to read if I don’t translate it