Math Problem Statement

cual es la respuesta correcta

Solution

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Cosine Law
Triangle Geometry

Formulas

AC^2 = AB^2 + BC^2 - 2(AB)(BC)cos(∠ACB)
Cosine of 60° = 0.5

Theorems

Cosine Law

Suitable Grade Level

Grades 9-12