If the sides of a triangle are \( L_{r} \equiv x \cos \alpha_{r}+y \sin \alpha_{r}-p_{r}=0 \), \... VIDEO
If the sides of a triangle are \( L_{r} \equiv x \cos \alpha_{r}+y \sin \alpha_{r}-p_{r}=0 \), \( (r=1,2,3) \) then Prove thathttps://bit.ly/YTAI_PWAP https://www.pw.live
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