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Centers of Triangle Example 3

 
 
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Re: Centers of Triangle Example 3
SongKevin - 2023年11月19日 Sunday 09:26
 

I am also confused on Example 5 (~1:27:40) and how we got \( \frac{DM \cdot \sin (\angle PDM)}{DI \cdot \sin (\angle PDI)} = \frac{2R \cdot \sin^2 (\alpha)}{2R \cdot \sin (\alpha)} \cdot \frac{\sin(90- \alpha + \alpha - \beta)}{\sin(C + \alpha - \beta)} \)