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Popular Trigonometria >

6sin(2x)=3cos(30)

Solução

6 sin (2 x) = 3 cos (3 0^{\circ})

Solução

x = \frac{0.44783 \dots}{2} + 18 0^{\circ} n, x = 9 0^{\circ} - \frac{0.44783 \dots}{2} + 18 0^{\circ} n

Radianos

x = \frac{0.44783 \dots}{2} + πn, x = \frac{π}{2} - \frac{0.44783 \dots}{2} + πn

Passos da solução

6 sin (2 x) = 3 cos (3 0^{\circ})

cos (3 0^{\circ}) = \frac{3}{2}

cos (3 0^{\circ})

Utilizar a seguinte identidade trivial:

cos (3 0^{\circ}) = \frac{3}{2}

cos (3 0^{\circ})

cos (x)

tabela de periodicidade com ciclo de

36 0^{\circ} n

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

= \frac{3}{2}

= \frac{3}{2}

6 sin (2 x) = 3 \cdot \frac{3}{2}

Dividir ambos os lados por

6

6 sin (2 x) = 3 \cdot \frac{3}{2}

Dividir ambos os lados por

6

\frac{6 sin ( 2 x )}{6} = \frac{3 \cdot \frac{3}{2}}{6}

Simplificar

\frac{6 sin ( 2 x )}{6} = \frac{3 \cdot \frac{3}{2}}{6}

Simplificar

\frac{6 sin ( 2 x )}{6} : sin (2 x)

\frac{6 sin ( 2 x )}{6}

Dividir:

\frac{6}{6} = 1

= sin (2 x)

Simplificar

\frac{3 \cdot \frac{3}{2}}{6} : \frac{3}{4}

\frac{3 \cdot \frac{3}{2}}{6}

Multiplicar

3 \cdot \frac{3}{2} : \frac{3 3}{2}

3 \cdot \frac{3}{2}

Multiplicar frações:

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

= \frac{3 \cdot 3}{2}

= \frac{\frac{3 3}{2}}{6}

Aplicar as propriedades das frações:

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

= \frac{3 \cdot 3}{2 \cdot 6}

Multiplicar os números:

2 \cdot 6 = 12

= \frac{3 3}{12}

Eliminar o fator comum:

3

= \frac{3}{4}

sin (2 x) = \frac{3}{4}

sin (2 x) = \frac{3}{4}

sin (2 x) = \frac{3}{4}

Aplique as propriedades trigonométricas inversas

sin (2 x) = \frac{3}{4}

Soluções gerais para

sin (2 x) = \frac{3}{4}

sin (x) = a \Rightarrow x = arcsin (a) + 36 0^{\circ} n, x = 18 0^{\circ} - arcsin (a) + 36 0^{\circ} n

2 x = arcsin (\frac{3}{4}) + 36 0^{\circ} n, 2 x = 18 0^{\circ} - arcsin (\frac{3}{4}) + 36 0^{\circ} n

2 x = arcsin (\frac{3}{4}) + 36 0^{\circ} n, 2 x = 18 0^{\circ} - arcsin (\frac{3}{4}) + 36 0^{\circ} n

Resolver

2 x = arcsin (\frac{3}{4}) + 36 0^{\circ} n : x = \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

2 x = arcsin (\frac{3}{4}) + 36 0^{\circ} n

Dividir ambos os lados por

2

2 x = arcsin (\frac{3}{4}) + 36 0^{\circ} n

Dividir ambos os lados por

2

\frac{2 x}{2} = \frac{arcsin ( \frac{3}{4} )}{2} + \frac{36 0 ^{\circ} n}{2}

Simplificar

x = \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

x = \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

Resolver

2 x = 18 0^{\circ} - arcsin (\frac{3}{4}) + 36 0^{\circ} n : x = 9 0^{\circ} - \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

2 x = 18 0^{\circ} - arcsin (\frac{3}{4}) + 36 0^{\circ} n

Dividir ambos os lados por

2

2 x = 18 0^{\circ} - arcsin (\frac{3}{4}) + 36 0^{\circ} n

Dividir ambos os lados por

2

\frac{2 x}{2} = 9 0^{\circ} - \frac{arcsin ( \frac{3}{4} )}{2} + \frac{36 0 ^{\circ} n}{2}

Simplificar

x = 9 0^{\circ} - \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

x = 9 0^{\circ} - \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

x = \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n, x = 9 0^{\circ} - \frac{arcsin ( \frac{3}{4} )}{2} + 18 0^{\circ} n

Mostrar soluções na forma decimal

x = \frac{0.44783 \dots}{2} + 18 0^{\circ} n, x = 9 0^{\circ} - \frac{0.44783 \dots}{2} + 18 0^{\circ} n

Gráfico

Exemplos populares

cos(y)=-1

cos (y) = - 1

cot(x)=-2/3

cot (x) = - \frac{2}{3}

tan((3θ)/4)=(-sqrt(3))/3

tan (\frac{3 θ}{4}) = \frac{- 3}{3}

30=15cos((2pi)/(365)t)+43

30 = 15 cos (\frac{2 π}{365} t) + 43

sin(x)=+1e

sin (x) = + 1 e