English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Trigonometria >

2sin(x-pi/4)+sqrt(2)cos(x)=1

Solução

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

Solução

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

Graus

x = 4 5^{\circ} + 36 0^{\circ} n, x = 13 5^{\circ} + 36 0^{\circ} n

Passos da solução

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

Reeecreva usando identidades trigonométricas

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

Reeecreva usando identidades trigonométricas

sin (x - \frac{π}{4})

Use a identidade de diferença de ângulos:

sin (s - t) = sin (s) cos (t) - cos (s) sin (t)

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

Simplificar

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

sin (x) cos (\frac{π}{4}) - cos (x) sin (\frac{π}{4})

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

sin (x) cos (\frac{π}{4})

Simplificar

cos (\frac{π}{4}) : \frac{2}{2}

cos (\frac{π}{4})

Utilizar a seguinte identidade trivial:

cos (\frac{π}{4}) = \frac{2}{2}

cos (x)

tabela de periodicidade com ciclo de

2 πn

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

= \frac{2}{2}

= \frac{2}{2} sin (x)

Multiplicar frações:

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

= \frac{2 sin ( x )}{2}

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

cos (x) sin (\frac{π}{4})

Simplificar

sin (\frac{π}{4}) : \frac{2}{2}

sin (\frac{π}{4})

Utilizar a seguinte identidade trivial:

sin (\frac{π}{4}) = \frac{2}{2}

sin (x)

tabela de periodicidade com ciclo de

2 πn

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{2}{2}

= \frac{2}{2} cos (x)

Multiplicar frações:

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

= \frac{2 cos ( x )}{2}

= \frac{2 sin ( x )}{2} - \frac{2 cos ( x )}{2}

Aplicar a regra

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

= \frac{2 sin ( x ) - 2 cos ( x )}{2}

= \frac{2 sin ( x ) - 2 cos ( x )}{2}

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

Simplificar

2 \cdot \frac{2 sin ( x ) - 2 cos ( x )}{2} + 2 cos (x) : 2 sin (x)

2 \cdot \frac{2 sin ( x ) - 2 cos ( x )}{2} + 2 cos (x)

2 \cdot \frac{2 sin ( x ) - 2 cos ( x )}{2} = 2 sin (x) - 2 cos (x)

2 \cdot \frac{2 sin ( x ) - 2 cos ( x )}{2}

Multiplicar frações:

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

= \frac{( 2 sin ( x ) - 2 cos ( x ) ) \cdot 2}{2}

Eliminar o fator comum:

2

= 2 sin (x) - 2 cos (x)

= 2 sin (x) - 2 cos (x) + 2 cos (x)

Somar elementos similares:

- 2 cos (x) + 2 cos (x) = 0

= 2 sin (x)

2 sin (x) = 1

2 sin (x) = 1

Subtrair

1

de ambos os lados

2 sin (x) - 1 = 0

Mova

1

para o lado direito

2 sin (x) - 1 = 0

Adicionar

1

a ambos os lados

2 sin (x) - 1 + 1 = 0 + 1

Simplificar

2 sin (x) = 1

2 sin (x) = 1

Dividir ambos os lados por

2

2 sin (x) = 1

Dividir ambos os lados por

2

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

Simplificar

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

Simplificar

\frac{2 sin ( x )}{2} : sin (x)

\frac{2 sin ( x )}{2}

Eliminar o fator comum:

2

= sin (x)

Simplificar

\frac{1}{2} : \frac{2}{2}

\frac{1}{2}

Multiplicar pelo conjugado

\frac{2}{2}

= \frac{1 \cdot 2}{2 2}

1 \cdot 2 = 2

22 = 2

22

Aplicar as propriedades dos radicais:

a a = a

22 = 2

= 2

= \frac{2}{2}

sin (x) = \frac{2}{2}

sin (x) = \frac{2}{2}

sin (x) = \frac{2}{2}

Soluções gerais para

sin (x) = \frac{2}{2}

sin (x)

tabela de periodicidade com ciclo de

2 πn

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

x = \frac{π}{4} + 2 πn, x = \frac{3 π}{4} + 2 πn

Gráfico

Exemplos populares

sin^2(θ)=2cos(θ)+1

sin^{2} (θ) = 2 cos (θ) + 1

sin(6x)cos(10x)-cos(6x)sin(10x)=-0.1

sin (6 x) cos (10 x) - cos (6 x) sin (10 x) = - 0.1

(cos(θ))(cos(θ)+1)=0

(cos (θ)) (cos (θ) + 1) = 0

5-tan^2(x)=4,0<= x<= 360

5 - tan^{2} (x) = 4, 0^{\circ} \leq x \leq 36 0^{\circ}

-2tan(x)+1=2sqrt(3)+1

- 2 tan (x) + 1 = 23 + 1