Math Problem Statement
ABC est un triangle tel que AB= 5cm, AC= 6cm BC=4cm D est le millieu de BC E est le point de AB tel que BDE=BAC. Calculez les longueur BE et DE
Solution
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Math Problem Analysis
Mathematical Concepts
Triangle Geometry
Cosine Rule
Triangle Similarity
Proportions in Triangles
Formulas
Cosine Rule: cos(∠BAC) = (AB² + AC² - BC²) / (2 * AB * AC)
Similarity Ratio: BE/BA = DE/AC = BD/BC
Theorems
Cosine Rule
Triangle Similarity Theorem
Suitable Grade Level
Grades 9-11
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