Math Problem Statement
Se A,B,C e D s˜ao v´ertices de um triˆangulo equil´atero de lado medindo 1, determine o valor de: (a) ⃗ AB· ⃗ AC (b) ⃗ AB· ⃗ BC (c) ( ⃗ AB+ ⃗ BC)· ⃗ CA
Solution
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Math Problem Analysis
Mathematical Concepts
Vector Algebra
Dot Product
Triangle Geometry
Formulas
Dot product formula: \( \vec{u} \cdot \vec{v} = |\vec{u}| \cdot |\vec{v}| \cdot \cos(\theta) \)
Theorems
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Suitable Grade Level
High School