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189.4=100tan^2(45-x/2)

Solución

189.4 = 100 tan^{2} (4 5^{\circ} - \frac{x}{2})

Solución

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 \cdot 0.94242 \dots, x = - 36 0^{\circ} n + 9 0^{\circ} + 2 \cdot 0.94242 \dots

radianes

x = \frac{π}{2} - 2 \cdot 0.94242 \dots - 2 πn, x = \frac{π}{2} + 2 \cdot 0.94242 \dots - 2 πn

Pasos de solución

189.4 = 100 tan^{2} (4 5^{\circ} - \frac{x}{2})

Intercambiar lados

100 tan^{2} (4 5^{\circ} - \frac{x}{2}) = 189.4

Usando el método de sustitución

100 tan^{2} (4 5^{\circ} - \frac{x}{2}) = 189.4

Sea:

tan (4 5^{\circ} - \frac{x}{2}) = u

100 u^{2} = 189.4

100 u^{2} = 189.4 : u = 1.894, u = - 1.894

100 u^{2} = 189.4

Dividir ambos lados entre

100

100 u^{2} = 189.4

Dividir ambos lados entre

100

\frac{100 u ^{2}}{100} = \frac{189.4}{100}

Simplificar

u^{2} = 1.894

u^{2} = 1.894

Para

x^{2} = f (a)

las soluciones son

x = f (a), - f (a)

u = 1.894, u = - 1.894

Sustituir en la ecuación

u = tan (4 5^{\circ} - \frac{x}{2})

tan (4 5^{\circ} - \frac{x}{2}) = 1.894, tan (4 5^{\circ} - \frac{x}{2}) = - 1.894

tan (4 5^{\circ} - \frac{x}{2}) = 1.894, tan (4 5^{\circ} - \frac{x}{2}) = - 1.894

tan (4 5^{\circ} - \frac{x}{2}) = 1.894 : x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

tan (4 5^{\circ} - \frac{x}{2}) = 1.894

Aplicar propiedades trigonométricas inversas

tan (4 5^{\circ} - \frac{x}{2}) = 1.894

Soluciones generales para

tan (4 5^{\circ} - \frac{x}{2}) = 1.894

tan (x) = a \Rightarrow x = arctan (a) + 18 0^{\circ} n

4 5^{\circ} - \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n

4 5^{\circ} - \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n

Resolver

4 5^{\circ} - \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n : x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

4 5^{\circ} - \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n

Desplace

4 5^{\circ}

a la derecha

4 5^{\circ} - \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n

Restar

4 5^{\circ}

de ambos lados

4 5^{\circ} - \frac{x}{2} - 4 5^{\circ} = arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

Simplificar

- \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

- \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

Multiplicar ambos lados por

2

- \frac{x}{2} = arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

Multiplicar ambos lados por

2

2 (- \frac{x}{2}) = 2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ}

Simplificar

2 (- \frac{x}{2}) = 2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ}

Simplificar

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

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

Quitar los parentesis:

(- a) = - a

= - 2 \cdot \frac{x}{2}

Multiplicar fracciones:

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

= - \frac{x \cdot 2}{2}

Eliminar los terminos comunes:

2

= - x

Simplificar

2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ} : 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ}

2 \cdot 4 5^{\circ} = 9 0^{\circ}

2 \cdot 4 5^{\circ}

Multiplicar fracciones:

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

= 9 0^{\circ}

Eliminar los terminos comunes:

2

= 9 0^{\circ}

= 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- x = 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- x = 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- x = 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

Dividir ambos lados entre

- 1

- x = 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

Dividir ambos lados entre

- 1

\frac{- x}{- 1} = \frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1}

Simplificar

\frac{- x}{- 1} = \frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1}

Simplificar

\frac{- x}{- 1} : x

\frac{- x}{- 1}

Aplicar las propiedades de las fracciones:

\frac{- a}{- b} = \frac{a}{b}

= \frac{x}{1}

Aplicar la regla

\frac{a}{1} = a

= x

Simplificar

\frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1} : - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

\frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1}

Agrupar términos semejantes

= \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1} + \frac{2 arctan ( 1.894 )}{- 1}

\frac{36 0 ^{\circ} n}{- 1} = - 36 0^{\circ} n

\frac{36 0 ^{\circ} n}{- 1}

Aplicar las propiedades de las fracciones:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{36 0 ^{\circ} n}{1}

Aplicar la regla

\frac{a}{1} = a

= - 36 0^{\circ} n

= - 36 0^{\circ} n - \frac{9 0 ^{\circ}}{- 1} + \frac{2 arctan ( 1.894 )}{- 1}

\frac{9 0 ^{\circ}}{- 1} = - 9 0^{\circ}

\frac{9 0 ^{\circ}}{- 1}

Aplicar las propiedades de las fracciones:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{9 0 ^{\circ}}{1}

Aplicar las propiedades de las fracciones:

\frac{a}{1} = a

\frac{9 0 ^{\circ}}{1} = 9 0^{\circ}

= - 9 0^{\circ}

\frac{2 arctan ( 1.894 )}{- 1} = - 2 arctan (1.894)

\frac{2 arctan ( 1.894 )}{- 1}

Aplicar las propiedades de las fracciones:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{2 arctan ( 1.894 )}{1}

Aplicar la regla

\frac{a}{1} = a

= - 2 arctan (1.894)

= - 36 0^{\circ} n - (- 9 0^{\circ}) - 2 arctan (1.894)

Aplicar la regla

- (- a) = a

= - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894)

tan (4 5^{\circ} - \frac{x}{2}) = - 1.894 : x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

tan (4 5^{\circ} - \frac{x}{2}) = - 1.894

Aplicar propiedades trigonométricas inversas

tan (4 5^{\circ} - \frac{x}{2}) = - 1.894

Soluciones generales para

tan (4 5^{\circ} - \frac{x}{2}) = - 1.894

tan (x) = - a \Rightarrow x = arctan (- a) + 18 0^{\circ} n

4 5^{\circ} - \frac{x}{2} = arctan (- 1.894) + 18 0^{\circ} n

4 5^{\circ} - \frac{x}{2} = arctan (- 1.894) + 18 0^{\circ} n

Resolver

4 5^{\circ} - \frac{x}{2} = arctan (- 1.894) + 18 0^{\circ} n : x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

4 5^{\circ} - \frac{x}{2} = arctan (- 1.894) + 18 0^{\circ} n

Simplificar

arctan (- 1.894) + 18 0^{\circ} n : - arctan (1.894) + 18 0^{\circ} n

arctan (- 1.894) + 18 0^{\circ} n

Utilizar la siguiente propiedad:

arctan (- x) = - arctan (x)

arctan (- 1.894) = - arctan (1.894)

= - arctan (1.894) + 18 0^{\circ} n

4 5^{\circ} - \frac{x}{2} = - arctan (1.894) + 18 0^{\circ} n

Desplace

4 5^{\circ}

a la derecha

4 5^{\circ} - \frac{x}{2} = - arctan (1.894) + 18 0^{\circ} n

Restar

4 5^{\circ}

de ambos lados

4 5^{\circ} - \frac{x}{2} - 4 5^{\circ} = - arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

Simplificar

- \frac{x}{2} = - arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

- \frac{x}{2} = - arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

Multiplicar ambos lados por

2

- \frac{x}{2} = - arctan (1.894) + 18 0^{\circ} n - 4 5^{\circ}

Multiplicar ambos lados por

2

2 (- \frac{x}{2}) = - 2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ}

Simplificar

2 (- \frac{x}{2}) = - 2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ}

Simplificar

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

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

Quitar los parentesis:

(- a) = - a

= - 2 \cdot \frac{x}{2}

Multiplicar fracciones:

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

= - \frac{x \cdot 2}{2}

Eliminar los terminos comunes:

2

= - x

Simplificar

- 2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ} : - 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- 2 arctan (1.894) + 36 0^{\circ} n - 2 \cdot 4 5^{\circ}

2 \cdot 4 5^{\circ} = 9 0^{\circ}

2 \cdot 4 5^{\circ}

Multiplicar fracciones:

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

= 9 0^{\circ}

Eliminar los terminos comunes:

2

= 9 0^{\circ}

= - 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- x = - 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- x = - 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

- x = - 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

Dividir ambos lados entre

- 1

- x = - 2 arctan (1.894) + 36 0^{\circ} n - 9 0^{\circ}

Dividir ambos lados entre

- 1

\frac{- x}{- 1} = - \frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1}

Simplificar

\frac{- x}{- 1} = - \frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1}

Simplificar

\frac{- x}{- 1} : x

\frac{- x}{- 1}

Aplicar las propiedades de las fracciones:

\frac{- a}{- b} = \frac{a}{b}

= \frac{x}{1}

Aplicar la regla

\frac{a}{1} = a

= x

Simplificar

- \frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1} : - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

- \frac{2 arctan ( 1.894 )}{- 1} + \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1}

Agrupar términos semejantes

= \frac{36 0 ^{\circ} n}{- 1} - \frac{9 0 ^{\circ}}{- 1} - \frac{2 arctan ( 1.894 )}{- 1}

\frac{36 0 ^{\circ} n}{- 1} = - 36 0^{\circ} n

\frac{36 0 ^{\circ} n}{- 1}

Aplicar las propiedades de las fracciones:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{36 0 ^{\circ} n}{1}

Aplicar la regla

\frac{a}{1} = a

= - 36 0^{\circ} n

= - 36 0^{\circ} n - \frac{9 0 ^{\circ}}{- 1} - \frac{2 arctan ( 1.894 )}{- 1}

\frac{9 0 ^{\circ}}{- 1} = - 9 0^{\circ}

\frac{9 0 ^{\circ}}{- 1}

Aplicar las propiedades de las fracciones:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{9 0 ^{\circ}}{1}

Aplicar las propiedades de las fracciones:

\frac{a}{1} = a

\frac{9 0 ^{\circ}}{1} = 9 0^{\circ}

= - 9 0^{\circ}

\frac{2 arctan ( 1.894 )}{- 1} = - 2 arctan (1.894)

\frac{2 arctan ( 1.894 )}{- 1}

Aplicar las propiedades de las fracciones:

\frac{a}{- b} = - \frac{a}{b}

= - \frac{2 arctan ( 1.894 )}{1}

Aplicar la regla

\frac{a}{1} = a

= - 2 arctan (1.894)

= - 36 0^{\circ} n - (- 9 0^{\circ}) - (- 2 arctan (1.894))

Aplicar la regla

- (- a) = a

= - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

Combinar toda las soluciones

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 arctan (1.894), x = - 36 0^{\circ} n + 9 0^{\circ} + 2 arctan (1.894)

Mostrar soluciones en forma decimal

x = - 36 0^{\circ} n + 9 0^{\circ} - 2 \cdot 0.94242 \dots, x = - 36 0^{\circ} n + 9 0^{\circ} + 2 \cdot 0.94242 \dots

Gráfica

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