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Popular Trigonometria >

cos(1/(3x))= 1/3

Solução

cos (\frac{1}{3 x}) = \frac{1}{3}

Solução

x = \frac{1}{3 ( 1.23095 \dots + 2 πn )}, x = \frac{1}{3 ( 2 π - 1.23095 \dots + 2 πn )}

Graus

x = 0^{\circ} + 2.54168 \dots^{\circ} n, x = 0^{\circ} + 1.68486 \dots^{\circ} n

Passos da solução

cos (\frac{1}{3 x}) = \frac{1}{3}

Aplique as propriedades trigonométricas inversas

cos (\frac{1}{3 x}) = \frac{1}{3}

Soluções gerais para

cos (\frac{1}{3 x}) = \frac{1}{3}

cos (x) = a \Rightarrow x = arccos (a) + 2 πn, x = 2 π - arccos (a) + 2 πn

\frac{1}{3 x} = arccos (\frac{1}{3}) + 2 πn, \frac{1}{3 x} = 2 π - arccos (\frac{1}{3}) + 2 πn

\frac{1}{3 x} = arccos (\frac{1}{3}) + 2 πn, \frac{1}{3 x} = 2 π - arccos (\frac{1}{3}) + 2 πn

Resolver

\frac{1}{3 x} = arccos (\frac{1}{3}) + 2 πn : x = \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

\frac{1}{3 x} = arccos (\frac{1}{3}) + 2 πn

Multiplicar ambos os lados por

x

\frac{1}{3 x} = arccos (\frac{1}{3}) + 2 πn

Multiplicar ambos os lados por

x

\frac{1}{3 x} x = arccos (\frac{1}{3}) x + 2 πn x

Simplificar

\frac{1}{3} = arccos (\frac{1}{3}) x + 2 πn x

\frac{1}{3} = arccos (\frac{1}{3}) x + 2 πn x

Trocar lados

arccos (\frac{1}{3}) x + 2 πn x = \frac{1}{3}

Fatorar

arccos (\frac{1}{3}) x + 2 πn x : x (arccos (\frac{1}{3}) + 2 πn)

arccos (\frac{1}{3}) x + 2 πn x

Fatorar o termo comum

x

= x (arccos (\frac{1}{3}) + 2 πn)

x (arccos (\frac{1}{3}) + 2 πn) = \frac{1}{3}

Dividir ambos os lados por

arccos (\frac{1}{3}) + 2 πn; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

x (arccos (\frac{1}{3}) + 2 πn) = \frac{1}{3}

Dividir ambos os lados por

arccos (\frac{1}{3}) + 2 πn; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

\frac{x ( arccos ( \frac{1}{3} ) + 2 πn )}{arccos ( \frac{1}{3} ) + 2 πn} = \frac{\frac{1}{3}}{arccos ( \frac{1}{3} ) + 2 πn}; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

Simplificar

\frac{x ( arccos ( \frac{1}{3} ) + 2 πn )}{arccos ( \frac{1}{3} ) + 2 πn} = \frac{\frac{1}{3}}{arccos ( \frac{1}{3} ) + 2 πn}

Simplificar

\frac{x ( arccos ( \frac{1}{3} ) + 2 πn )}{arccos ( \frac{1}{3} ) + 2 πn} : x

\frac{x ( arccos ( \frac{1}{3} ) + 2 πn )}{arccos ( \frac{1}{3} ) + 2 πn}

Eliminar o fator comum:

arccos (\frac{1}{3}) + 2 πn

= x

Simplificar

\frac{\frac{1}{3}}{arccos ( \frac{1}{3} ) + 2 πn} : \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}

\frac{\frac{1}{3}}{arccos ( \frac{1}{3} ) + 2 πn}

Aplicar as propriedades das frações:

\frac{\frac{b}{c}}{a} = \frac{b}{c \cdot a}

= \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}

x = \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

x = \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

x = \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = - \frac{arccos ( \frac{1}{3} )}{2 π}

Resolver

\frac{1}{3 x} = 2 π - arccos (\frac{1}{3}) + 2 πn : x = \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

\frac{1}{3 x} = 2 π - arccos (\frac{1}{3}) + 2 πn

Multiplicar ambos os lados por

x

\frac{1}{3 x} = 2 π - arccos (\frac{1}{3}) + 2 πn

Multiplicar ambos os lados por

x

\frac{1}{3 x} x = 2 π x - arccos (\frac{1}{3}) x + 2 πn x

Simplificar

\frac{1}{3} = 2 π x - arccos (\frac{1}{3}) x + 2 πn x

\frac{1}{3} = 2 π x - arccos (\frac{1}{3}) x + 2 πn x

Trocar lados

2 π x - arccos (\frac{1}{3}) x + 2 πn x = \frac{1}{3}

Fatorar

2 π x - arccos (\frac{1}{3}) x + 2 πn x : x (2 π - arccos (\frac{1}{3}) + 2 πn)

2 π x - arccos (\frac{1}{3}) x + 2 πn x

Fatorar o termo comum

x

= x (2 π - arccos (\frac{1}{3}) + 2 πn)

x (2 π - arccos (\frac{1}{3}) + 2 πn) = \frac{1}{3}

Dividir ambos os lados por

2 π - arccos (\frac{1}{3}) + 2 πn; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

x (2 π - arccos (\frac{1}{3}) + 2 πn) = \frac{1}{3}

Dividir ambos os lados por

2 π - arccos (\frac{1}{3}) + 2 πn; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

\frac{x ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}{2 π - arccos ( \frac{1}{3} ) + 2 πn} = \frac{\frac{1}{3}}{2 π - arccos ( \frac{1}{3} ) + 2 πn}; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

Simplificar

\frac{x ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}{2 π - arccos ( \frac{1}{3} ) + 2 πn} = \frac{\frac{1}{3}}{2 π - arccos ( \frac{1}{3} ) + 2 πn}

Simplificar

\frac{x ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}{2 π - arccos ( \frac{1}{3} ) + 2 πn} : x

\frac{x ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}{2 π - arccos ( \frac{1}{3} ) + 2 πn}

Eliminar o fator comum:

2 π - arccos (\frac{1}{3}) + 2 πn

= x

Simplificar

\frac{\frac{1}{3}}{2 π - arccos ( \frac{1}{3} ) + 2 πn} : \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}

\frac{\frac{1}{3}}{2 π - arccos ( \frac{1}{3} ) + 2 πn}

Aplicar as propriedades das frações:

\frac{\frac{b}{c}}{a} = \frac{b}{c \cdot a}

= \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}

x = \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

x = \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

x = \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}; n \neq = \frac{- 2 π + arccos ( \frac{1}{3} )}{2 π}

x = \frac{1}{3 ( arccos ( \frac{1}{3} ) + 2 πn )}, x = \frac{1}{3 ( 2 π - arccos ( \frac{1}{3} ) + 2 πn )}

Mostrar soluções na forma decimal

x = \frac{1}{3 ( 1.23095 \dots + 2 πn )}, x = \frac{1}{3 ( 2 π - 1.23095 \dots + 2 πn )}

Gráfico

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