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vineri, 12 iunie 2026

Aops, ISL 1991 https://artofproblemsolving.com/community/c6t48f6h3846021_simple_trigonometry_problem


 

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  1. At https://artofproblemsolving.com/community/c6t48f6h3846021_simple_trigonometry_problem you will find another solution made with my son

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