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Popular Trigonometria >

1+cos(x)=sqrt(3)-sin(x)

Solução

1 + cos (x) = 3 - sin (x)

Solução

x = 0.54408 \dots + 2 πn - \frac{π}{4}, x = π - 0.54408 \dots + 2 πn - \frac{π}{4}

Graus

x = - 13.82604 \dots^{\circ} + 36 0^{\circ} n, x = 103.82604 \dots^{\circ} + 36 0^{\circ} n

Passos da solução

1 + cos (x) = 3 - sin (x)

Subtrair

3 - sin (x)

de ambos os lados

1 + cos (x) - 3 + sin (x) = 0

Reeecreva usando identidades trigonométricas

1 + cos (x) - 3 + sin (x)

sin (x) + cos (x) = 2 sin (x + \frac{π}{4})

sin (x) + cos (x)

Reescrever como

= 2 (\frac{1}{2} sin (x) + \frac{1}{2} cos (x))

Utilizar a seguinte identidade trivial:

cos (\frac{π}{4}) = \frac{1}{2}

Utilizar a seguinte identidade trivial:

sin (\frac{π}{4}) = \frac{1}{2}

= 2 (cos (\frac{π}{4}) sin (x) + sin (\frac{π}{4}) cos (x))

Use a identidade de soma de ângulos:

sin (s + t) = sin (s) cos (t) + cos (s) sin (t)

= 2 sin (x + \frac{π}{4})

= 1 - 3 + 2 sin (x + \frac{π}{4})

1 - 3 + 2 sin (x + \frac{π}{4}) = 0

Mova

1

para o lado direito

1 - 3 + 2 sin (x + \frac{π}{4}) = 0

Subtrair

1

de ambos os lados

1 - 3 + 2 sin (x + \frac{π}{4}) - 1 = 0 - 1

Simplificar

- 3 + 2 sin (x + \frac{π}{4}) = - 1

- 3 + 2 sin (x + \frac{π}{4}) = - 1

Mova

3

para o lado direito

- 3 + 2 sin (x + \frac{π}{4}) = - 1

Adicionar

3

a ambos os lados

- 3 + 2 sin (x + \frac{π}{4}) + 3 = - 1 + 3

Simplificar

2 sin (x + \frac{π}{4}) = - 1 + 3

2 sin (x + \frac{π}{4}) = - 1 + 3

Dividir ambos os lados por

2

2 sin (x + \frac{π}{4}) = - 1 + 3

Dividir ambos os lados por

2

\frac{2 sin ( x + \frac{π}{4} )}{2} = - \frac{1}{2} + \frac{3}{2}

Simplificar

\frac{2 sin ( x + \frac{π}{4} )}{2} = - \frac{1}{2} + \frac{3}{2}

Simplificar

\frac{2 sin ( x + \frac{π}{4} )}{2} : sin (x + \frac{π}{4})

\frac{2 sin ( x + \frac{π}{4} )}{2}

Eliminar o fator comum:

2

= sin (x + \frac{π}{4})

Simplificar

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

- \frac{1}{2} + \frac{3}{2}

Aplicar a regra

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

= \frac{- 1 + 3}{2}

Multiplicar pelo conjugado

\frac{2}{2}

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

22 = 2

22

Aplicar as propriedades dos radicais:

a a = a

22 = 2

= 2

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

sin (x + \frac{π}{4}) = \frac{2 ( - 1 + 3 )}{2}

sin (x + \frac{π}{4}) = \frac{2 ( - 1 + 3 )}{2}

sin (x + \frac{π}{4}) = \frac{2 ( - 1 + 3 )}{2}

Aplique as propriedades trigonométricas inversas

sin (x + \frac{π}{4}) = \frac{2 ( - 1 + 3 )}{2}

Soluções gerais para

sin (x + \frac{π}{4}) = \frac{2 ( - 1 + 3 )}{2}

sin (x) = a \Rightarrow x = arcsin (a) + 2 πn, x = π - arcsin (a) + 2 πn

x + \frac{π}{4} = arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn, x + \frac{π}{4} = π - arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn

x + \frac{π}{4} = arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn, x + \frac{π}{4} = π - arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn

Resolver

x + \frac{π}{4} = arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn : x = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x + \frac{π}{4} = arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn

Simplificar

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

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

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

\frac{2 ( - 1 + 3 )}{2}

Aplicar as propriedades dos radicais:

n a = a^{\frac{1}{n}}

2 = 2^{\frac{1}{2}}

= \frac{2 ^{\frac{1}{2}} ( 3 - 1 )}{2}

Aplicar as propriedades dos expoentes:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{1}{2}}}{2 ^{1}} = \frac{1}{2 ^{1 - \frac{1}{2}}}

= \frac{- 1 + 3}{2 ^{1 - \frac{1}{2}}}

Subtrair:

1 - \frac{1}{2} = \frac{1}{2}

= \frac{- 1 + 3}{2 ^{\frac{1}{2}}}

Aplicar as propriedades dos radicais:

a^{\frac{1}{n}} = n a

2^{\frac{1}{2}} = 2

= \frac{- 1 + 3}{2}

= arcsin (\frac{3 - 1}{2}) + 2 πn

x + \frac{π}{4} = arcsin (\frac{- 1 + 3}{2}) + 2 πn

Mova

\frac{π}{4}

para o lado direito

x + \frac{π}{4} = arcsin (\frac{- 1 + 3}{2}) + 2 πn

Subtrair

\frac{π}{4}

de ambos os lados

x + \frac{π}{4} - \frac{π}{4} = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

Simplificar

x + \frac{π}{4} - \frac{π}{4} = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

Simplificar

x + \frac{π}{4} - \frac{π}{4} : x

x + \frac{π}{4} - \frac{π}{4}

Somar elementos similares:

\frac{π}{4} - \frac{π}{4} = 0

= x

Simplificar

arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4} : arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

= arcsin (\frac{2 ( 3 - 1 )}{2}) + 2 πn - \frac{π}{4}

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

\frac{2 ( - 1 + 3 )}{2}

Aplicar as propriedades dos radicais:

n a = a^{\frac{1}{n}}

2 = 2^{\frac{1}{2}}

= \frac{2 ^{\frac{1}{2}} ( 3 - 1 )}{2}

Aplicar as propriedades dos expoentes:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{1}{2}}}{2 ^{1}} = \frac{1}{2 ^{1 - \frac{1}{2}}}

= \frac{- 1 + 3}{2 ^{1 - \frac{1}{2}}}

Subtrair:

1 - \frac{1}{2} = \frac{1}{2}

= \frac{- 1 + 3}{2 ^{\frac{1}{2}}}

Aplicar as propriedades dos radicais:

a^{\frac{1}{n}} = n a

2^{\frac{1}{2}} = 2

= \frac{- 1 + 3}{2}

= arcsin (\frac{3 - 1}{2}) + 2 πn - \frac{π}{4}

Não se pode simplificar mais

= arcsin (\frac{3 - 1}{2}) + 2 πn - \frac{π}{4}

x = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

Resolver

x + \frac{π}{4} = π - arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn : x = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x + \frac{π}{4} = π - arcsin (\frac{2 ( - 1 + 3 )}{2}) + 2 πn

Simplificar

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

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

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

\frac{2 ( - 1 + 3 )}{2}

Aplicar as propriedades dos radicais:

n a = a^{\frac{1}{n}}

2 = 2^{\frac{1}{2}}

= \frac{2 ^{\frac{1}{2}} ( 3 - 1 )}{2}

Aplicar as propriedades dos expoentes:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{1}{2}}}{2 ^{1}} = \frac{1}{2 ^{1 - \frac{1}{2}}}

= \frac{- 1 + 3}{2 ^{1 - \frac{1}{2}}}

Subtrair:

1 - \frac{1}{2} = \frac{1}{2}

= \frac{- 1 + 3}{2 ^{\frac{1}{2}}}

Aplicar as propriedades dos radicais:

a^{\frac{1}{n}} = n a

2^{\frac{1}{2}} = 2

= \frac{- 1 + 3}{2}

= π - arcsin (\frac{3 - 1}{2}) + 2 πn

x + \frac{π}{4} = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn

Mova

\frac{π}{4}

para o lado direito

x + \frac{π}{4} = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn

Subtrair

\frac{π}{4}

de ambos os lados

x + \frac{π}{4} - \frac{π}{4} = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

Simplificar

x + \frac{π}{4} - \frac{π}{4} = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

Simplificar

x + \frac{π}{4} - \frac{π}{4} : x

x + \frac{π}{4} - \frac{π}{4}

Somar elementos similares:

\frac{π}{4} - \frac{π}{4} = 0

= x

Simplificar

π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4} : π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

= π - arcsin (\frac{2 ( 3 - 1 )}{2}) + 2 πn - \frac{π}{4}

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

\frac{2 ( - 1 + 3 )}{2}

Aplicar as propriedades dos radicais:

n a = a^{\frac{1}{n}}

2 = 2^{\frac{1}{2}}

= \frac{2 ^{\frac{1}{2}} ( 3 - 1 )}{2}

Aplicar as propriedades dos expoentes:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{1}{2}}}{2 ^{1}} = \frac{1}{2 ^{1 - \frac{1}{2}}}

= \frac{- 1 + 3}{2 ^{1 - \frac{1}{2}}}

Subtrair:

1 - \frac{1}{2} = \frac{1}{2}

= \frac{- 1 + 3}{2 ^{\frac{1}{2}}}

Aplicar as propriedades dos radicais:

a^{\frac{1}{n}} = n a

2^{\frac{1}{2}} = 2

= \frac{- 1 + 3}{2}

= π - arcsin (\frac{3 - 1}{2}) + 2 πn - \frac{π}{4}

Não se pode simplificar mais

= π - arcsin (\frac{3 - 1}{2}) + 2 πn - \frac{π}{4}

x = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

x = arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}, x = π - arcsin (\frac{- 1 + 3}{2}) + 2 πn - \frac{π}{4}

Mostrar soluções na forma decimal

x = 0.54408 \dots + 2 πn - \frac{π}{4}, x = π - 0.54408 \dots + 2 πn - \frac{π}{4}

Gráfico

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