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Popular Trigonometria >

1.5=1+0.6cos((pit)/2)

Solução

1.5 = 1 + 0.6 cos (\frac{π t}{2})

Solução

t = \frac{2 \cdot 0.58568 \dots}{π} + 4 n, t = 4 - \frac{2 \cdot 0.58568 \dots}{π} + 4 n

Graus

t = 21.36324 \dots^{\circ} + 229.18311 \dots^{\circ} n, t = 207.81987 \dots^{\circ} + 229.18311 \dots^{\circ} n

Passos da solução

1.5 = 1 + 0.6 cos (\frac{π t}{2})

Trocar lados

1 + 0.6 cos (\frac{π t}{2}) = 1.5

Multiplicar ambos os lados por

10

1 + 0.6 cos (\frac{π t}{2}) = 1.5

To eliminate decimal points, multiply by 10 for every digit after the decimal pointThere is one digit to the right of the decimal point, therefore multiply by

10

1 \cdot 10 + 0.6 cos (\frac{π t}{2}) \cdot 10 = 1.5 \cdot 10

Simplificar

10 + 6 cos (\frac{π t}{2}) = 15

10 + 6 cos (\frac{π t}{2}) = 15

Mova

10

para o lado direito

10 + 6 cos (\frac{π t}{2}) = 15

Subtrair

10

de ambos os lados

10 + 6 cos (\frac{π t}{2}) - 10 = 15 - 10

Simplificar

6 cos (\frac{π t}{2}) = 5

6 cos (\frac{π t}{2}) = 5

Dividir ambos os lados por

6

6 cos (\frac{π t}{2}) = 5

Dividir ambos os lados por

6

\frac{6 cos ( \frac{π t}{2} )}{6} = \frac{5}{6}

Simplificar

cos (\frac{π t}{2}) = \frac{5}{6}

cos (\frac{π t}{2}) = \frac{5}{6}

Aplique as propriedades trigonométricas inversas

cos (\frac{π t}{2}) = \frac{5}{6}

Soluções gerais para

cos (\frac{π t}{2}) = \frac{5}{6}

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

\frac{π t}{2} = arccos (\frac{5}{6}) + 2 πn, \frac{π t}{2} = 2 π - arccos (\frac{5}{6}) + 2 πn

\frac{π t}{2} = arccos (\frac{5}{6}) + 2 πn, \frac{π t}{2} = 2 π - arccos (\frac{5}{6}) + 2 πn

Resolver

\frac{π t}{2} = arccos (\frac{5}{6}) + 2 πn : t = \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

\frac{π t}{2} = arccos (\frac{5}{6}) + 2 πn

Multiplicar ambos os lados por

2

\frac{π t}{2} = arccos (\frac{5}{6}) + 2 πn

Multiplicar ambos os lados por

2

\frac{2 π t}{2} = 2 arccos (\frac{5}{6}) + 2 \cdot 2 πn

Simplificar

\frac{2 π t}{2} = 2 arccos (\frac{5}{6}) + 2 \cdot 2 πn

Simplificar

\frac{2 π t}{2} : π t

\frac{2 π t}{2}

Dividir:

\frac{2}{2} = 1

= π t

Simplificar

2 arccos (\frac{5}{6}) + 2 \cdot 2 πn : 2 arccos (\frac{5}{6}) + 4 πn

2 arccos (\frac{5}{6}) + 2 \cdot 2 πn

Multiplicar os números:

2 \cdot 2 = 4

= 2 arccos (\frac{5}{6}) + 4 πn

π t = 2 arccos (\frac{5}{6}) + 4 πn

π t = 2 arccos (\frac{5}{6}) + 4 πn

π t = 2 arccos (\frac{5}{6}) + 4 πn

Dividir ambos os lados por

π

π t = 2 arccos (\frac{5}{6}) + 4 πn

Dividir ambos os lados por

π

\frac{π t}{π} = \frac{2 arccos ( \frac{5}{6} )}{π} + \frac{4 πn}{π}

Simplificar

t = \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

t = \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

Resolver

\frac{π t}{2} = 2 π - arccos (\frac{5}{6}) + 2 πn : t = 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

\frac{π t}{2} = 2 π - arccos (\frac{5}{6}) + 2 πn

Multiplicar ambos os lados por

2

\frac{π t}{2} = 2 π - arccos (\frac{5}{6}) + 2 πn

Multiplicar ambos os lados por

2

\frac{2 π t}{2} = 2 \cdot 2 π - 2 arccos (\frac{5}{6}) + 2 \cdot 2 πn

Simplificar

\frac{2 π t}{2} = 2 \cdot 2 π - 2 arccos (\frac{5}{6}) + 2 \cdot 2 πn

Simplificar

\frac{2 π t}{2} : π t

\frac{2 π t}{2}

Dividir:

\frac{2}{2} = 1

= π t

Simplificar

2 \cdot 2 π - 2 arccos (\frac{5}{6}) + 2 \cdot 2 πn : 4 π - 2 arccos (\frac{5}{6}) + 4 πn

2 \cdot 2 π - 2 arccos (\frac{5}{6}) + 2 \cdot 2 πn

Multiplicar os números:

2 \cdot 2 = 4

= 4 π - 2 arccos (\frac{5}{6}) + 4 πn

π t = 4 π - 2 arccos (\frac{5}{6}) + 4 πn

π t = 4 π - 2 arccos (\frac{5}{6}) + 4 πn

π t = 4 π - 2 arccos (\frac{5}{6}) + 4 πn

Dividir ambos os lados por

π

π t = 4 π - 2 arccos (\frac{5}{6}) + 4 πn

Dividir ambos os lados por

π

\frac{π t}{π} = \frac{4 π}{π} - \frac{2 arccos ( \frac{5}{6} )}{π} + \frac{4 πn}{π}

Simplificar

\frac{π t}{π} = \frac{4 π}{π} - \frac{2 arccos ( \frac{5}{6} )}{π} + \frac{4 πn}{π}

Simplificar

\frac{π t}{π} : t

\frac{π t}{π}

Eliminar o fator comum:

π

= t

Simplificar

\frac{4 π}{π} - \frac{2 arccos ( \frac{5}{6} )}{π} + \frac{4 πn}{π} : 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

\frac{4 π}{π} - \frac{2 arccos ( \frac{5}{6} )}{π} + \frac{4 πn}{π}

Cancelar

\frac{4 π}{π} : 4

\frac{4 π}{π}

Eliminar o fator comum:

π

= 4

= 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + \frac{4 πn}{π}

Cancelar

\frac{4 πn}{π} : 4 n

\frac{4 πn}{π}

Eliminar o fator comum:

π

= 4 n

= 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

t = 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

t = 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

t = 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

t = \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n, t = 4 - \frac{2 arccos ( \frac{5}{6} )}{π} + 4 n

Mostrar soluções na forma decimal

t = \frac{2 \cdot 0.58568 \dots}{π} + 4 n, t = 4 - \frac{2 \cdot 0.58568 \dots}{π} + 4 n

Gráfico

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