Math Problem Statement
Cos x = cos 3x найди и распиши решение
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Equations involving trigonometric functions
Cosine function
Formulas
cos(α) = cos(β) → α = β + 2πn or α = -β + 2πn
Theorems
Periodicity of the cosine function
Trigonometric identity for equal cosines
Suitable Grade Level
Grades 10-12