std::cos - cppreference.com
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      std::cos

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      C++
       
      Biblioteca numéricos
      Funções matemáticas comuns
      De ponto flutuante ambiente
      Números complexos
      Matrizes numéricas
      Pseudo-aleatório de geração de números
      Tempo de compilação aritmética racional (C++11)
      Genéricos operações numéricas
      Original:
      Generic numeric operations
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      Funções matemáticas comuns
      Funções
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      Functions
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      Operações básicas
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      Basic operations
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      (C++11)(C++11)(C++11)
      Funções exponenciais
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      Exponential functions
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      Funções de poder
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      Power functions
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      Funções trigonométricas e hiperbólicas
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      Trigonometric and hyperbolic functions
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      Erro e funções gamma
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      Error and gamma functions
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      Número inteiro mais próximo de operações de ponto flutuante
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      Nearest integer floating point operations
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      (C++11)(C++11)(C++11)
      Flutuando funções de manipulação de pontos
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      Floating point manipulation functions
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      Classificação / Comparação
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      Classification/Comparison
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      Constantes de macros
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      Macro constants
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      <tbody> </tbody>
      Definido no cabeçalho <cmath>
      float cos( float arg );
      double cos( double arg );
      long double cos( long double arg );
      double cos( Integral arg );
      		 (desde C++11)
      Calcula cosseno de arg
      Original:
      Computes cosine of arg
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      Parâmetros

      arg -
      valor de ponto flutuante que representa o ângulo em radianos
      Original:
      floating point value representing angle in radians
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      Valor de retorno

      co-seno de arg na gama [-1.0 ; 1.0].
      Original:
      cosine of arg in the range [-1.0 ; 1.0].
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      Erro de domínio ocorre se arg é infinito. NAN é devolvido em caso.
      Original:
      Domain error occurs if arg is infinite. NAN is returned in that case.
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