Math Problem Statement
evaluar la siguiente expresión exactamente: cos 50°cos5° + sin50°sin5°:
Solution
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Math Problem Analysis
Mathematical Concepts
Trigonometry
Cosine and Sine Functions
Angle Identities
Formulas
Cosine difference identity: cos(A - B) = cos(A)cos(B) + sin(A)sin(B)
Theorems
Cosine of the difference of two angles
Suitable Grade Level
Grades 9-12
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