Math Problem Statement

l’angle entre les vecteurs v et u, v= [-0.8;-0.2] et u = [-0.8;0.9]

Solution

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Math Problem Analysis

Mathematical Concepts

Vector Analysis
Dot Product
Trigonometry
Angle Calculation

Formulas

cos(θ) = (v • u) / (||v|| ||u||)
||v|| = sqrt(v_x^2 + v_y^2)
θ = arccos(cos(θ))

Theorems

Dot Product Theorem
Pythagorean Theorem

Suitable Grade Level

Grades 10-12