Math Problem Statement
hallar el angulo que forma A y B si ||A||=3, ||B||=15 y ||A+B||=7
Solution
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Math Problem Analysis
Mathematical Concepts
Vector Geometry
Dot Product
Trigonometry
Formulas
||A + B||^2 = ||A||^2 + ||B||^2 + 2||A|| ||B|| cos(θ)
Theorems
Cosine Rule for Vectors
Suitable Grade Level
Grades 11-12