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\frac{15 \cdot 0.9205048534524404 - 15}{5}
Evaluate trigonometric functions in the problem
\frac{13.807572801786606-15}{5}
Multiplica 15 e 0.9205048534524404 para obter 13.807572801786606.
\frac{-1.192427198213394}{5}
Resta 15 de 13.807572801786606 para obter -1.192427198213394.
\frac{-1192427198213394}{5000000000000000}
Expande \frac{-1.192427198213394}{5} multiplicando o numerador e o denominador por 1000000000000000.
-\frac{596213599106697}{2500000000000000}
Reduce a fracción \frac{-1192427198213394}{5000000000000000} a termos máis baixos extraendo e cancelando 2.