Trigonometría Ejemplos

$\frac{\sin^{2} (x) - \tan^{2} (x)}{\tan^{2} (x) \sin^{2} (x)}$

Step 1

Simplifica el numerador.

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Dado que ambos términos son cuadrados perfectos, factoriza con la fórmula de la diferencia de cuadrados, $a^{2} - b^{2} = (a + b) (a - b)$ , donde $a = \sin (x)$ y $b = \tan (x)$ .

$\frac{(\sin (x) + \tan (x)) (\sin (x) - \tan (x))}{\tan^{2} (x) \sin^{2} (x)}$

Simplifica.

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Reescribe $\tan (x)$ en términos de senos y cosenos.

$\frac{(\sin (x) + \frac{\sin (x)}{\cos (x)}) (\sin (x) - \tan (x))}{\tan^{2} (x) \sin^{2} (x)}$

Factoriza $\sin (x)$ de $\sin (x) + \frac{\sin (x)}{\cos (x)}$ .

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Multiplica por $1$ .

$\frac{(\sin (x) \cdot 1 + \frac{\sin (x)}{\cos (x)}) (\sin (x) - \tan (x))}{\tan^{2} (x) \sin^{2} (x)}$

Factoriza $\sin (x)$ de $\frac{\sin (x)}{\cos (x)}$ .

$\frac{(\sin (x) \cdot 1 + \sin (x) \frac{1}{\cos (x)}) (\sin (x) - \tan (x))}{\tan^{2} (x) \sin^{2} (x)}$

Factoriza $\sin (x)$ de $\sin (x) \cdot 1 + \sin (x) \frac{1}{\cos (x)}$ .

$\frac{\sin (x) (1 + \frac{1}{\cos (x)}) (\sin (x) - \tan (x))}{\tan^{2} (x) \sin^{2} (x)}$

Reescribe $\tan (x)$ en términos de senos y cosenos.

$\frac{\sin (x) (1 + \frac{1}{\cos (x)}) (\sin (x) - \frac{\sin (x)}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Factoriza $\sin (x)$ de $\sin (x) - \frac{\sin (x)}{\cos (x)}$ .

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Multiplica por $1$ .

$\frac{\sin (x) (1 + \frac{1}{\cos (x)}) (\sin (x) \cdot 1 - \frac{\sin (x)}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Factoriza $\sin (x)$ de $- \frac{\sin (x)}{\cos (x)}$ .

$\frac{\sin (x) (1 + \frac{1}{\cos (x)}) (\sin (x) \cdot 1 + \sin (x) (- \frac{1}{\cos (x)}))}{\tan^{2} (x) \sin^{2} (x)}$

Factoriza $\sin (x)$ de $\sin (x) \cdot 1 + \sin (x) (- \frac{1}{\cos (x)})$ .

$\frac{\sin (x) (1 + \frac{1}{\cos (x)}) (\sin (x) (1 - \frac{1}{\cos (x)}))}{\tan^{2} (x) \sin^{2} (x)}$

$\frac{\sin (x) (1 + \frac{1}{\cos (x)}) \sin (x) (1 - \frac{1}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Combina exponentes.

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Eleva $\sin (x)$ a la potencia de $1$ .

$\frac{\sin^{1} (x) \sin (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Eleva $\sin (x)$ a la potencia de $1$ .

$\frac{\sin^{1} (x) \sin^{1} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

$\frac{{\sin (x)}^{1 + 1} (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Suma $1$ y $1$ .

$\frac{\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\tan^{2} (x) \sin^{2} (x)}$

Step 2

Simplifica el denominador.

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Reescribe $\tan (x)$ en términos de senos y cosenos.

$\frac{\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{{(\frac{\sin (x)}{\cos (x)})}^{2} \sin^{2} (x)}$

Aplica la regla del producto a $\frac{\sin (x)}{\cos (x)}$ .

$\frac{\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\frac{\sin^{2} (x)}{\cos^{2} (x)} \sin^{2} (x)}$

Step 3

Combina $\frac{\sin^{2} (x)}{\cos^{2} (x)}$ y $\sin^{2} (x)$ .

$\frac{\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\frac{\sin^{2} (x) \sin^{2} (x)}{\cos^{2} (x)}}$

Step 4

Multiplica $\sin^{2} (x)$ por $\sin^{2} (x)$ sumando los exponentes.

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Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

$\frac{\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\frac{{\sin (x)}^{2 + 2}}{\cos^{2} (x)}}$

Suma $2$ y $2$ .

$\frac{\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})}{\frac{\sin^{4} (x)}{\cos^{2} (x)}}$

Step 5

Multiplica el numerador por la recíproca del denominador.

$\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)}) \frac{\cos^{2} (x)}{\sin^{4} (x)}$

Step 6

Cancela el factor común de $\sin^{2} (x)$ .

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Factoriza $\sin^{2} (x)$ de $\sin^{2} (x) (1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})$ .

$\sin^{2} (x) ((1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})) \frac{\cos^{2} (x)}{\sin^{4} (x)}$

Factoriza $\sin^{2} (x)$ de $\sin^{4} (x)$ .

$\sin^{2} (x) ((1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})) \frac{\cos^{2} (x)}{\sin^{2} (x) \sin^{2} (x)}$

Cancela el factor común.

$\sin^{2} (x) ((1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})) \frac{\cos^{2} (x)}{\sin^{2} (x) \sin^{2} (x)}$

Reescribe la expresión.

$(1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Step 7

Expande $(1 + \frac{1}{\cos (x)}) (1 - \frac{1}{\cos (x)})$ con el método PEIU (primero, exterior, interior, ultimo).

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Aplica la propiedad distributiva.

$(1 (1 - \frac{1}{\cos (x)}) + \frac{1}{\cos (x)} (1 - \frac{1}{\cos (x)})) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Aplica la propiedad distributiva.

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

Aplica la propiedad distributiva.

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

Step 8

Simplifica y combina los términos similares.

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Simplifica cada término.

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Multiplica $1$ por $1$ .

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

Multiplica $- \frac{1}{\cos (x)}$ por $1$ .

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

Multiplica $\frac{1}{\cos (x)}$ por $1$ .

$(1 - \frac{1}{\cos (x)} + \frac{1}{\cos (x)} + \frac{1}{\cos (x)} (- \frac{1}{\cos (x)})) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Reescribe con la propiedad conmutativa de la multiplicación.

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

Multiplica $- \frac{1}{\cos (x)} \cdot \frac{1}{\cos (x)}$ .

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Multiplica $\frac{1}{\cos (x)}$ por $\frac{1}{\cos (x)}$ .

$(1 - \frac{1}{\cos (x)} + \frac{1}{\cos (x)} - \frac{1}{\cos (x) \cos (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Eleva $\cos (x)$ a la potencia de $1$ .

$(1 - \frac{1}{\cos (x)} + \frac{1}{\cos (x)} - \frac{1}{\cos^{1} (x) \cos (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Eleva $\cos (x)$ a la potencia de $1$ .

$(1 - \frac{1}{\cos (x)} + \frac{1}{\cos (x)} - \frac{1}{\cos^{1} (x) \cos^{1} (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Usa la regla de la potencia $a^{m} a^{n} = a^{m + n}$ para combinar exponentes.

$(1 - \frac{1}{\cos (x)} + \frac{1}{\cos (x)} - \frac{1}{{\cos (x)}^{1 + 1}}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Suma $1$ y $1$ .

$(1 - \frac{1}{\cos (x)} + \frac{1}{\cos (x)} - \frac{1}{\cos^{2} (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Suma $- \frac{1}{\cos (x)}$ y $\frac{1}{\cos (x)}$ .

$(1 + 0 - \frac{1}{\cos^{2} (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Suma $1$ y $0$ .

$(1 - \frac{1}{\cos^{2} (x)}) \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Step 9

Simplifica los términos.

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Aplica la propiedad distributiva.

$1 \frac{\cos^{2} (x)}{\sin^{2} (x)} - \frac{1}{\cos^{2} (x)} \cdot \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Multiplica $\frac{\cos^{2} (x)}{\sin^{2} (x)}$ por $1$ .

$\frac{\cos^{2} (x)}{\sin^{2} (x)} - \frac{1}{\cos^{2} (x)} \cdot \frac{\cos^{2} (x)}{\sin^{2} (x)}$

Cancela el factor común de $\cos^{2} (x)$ .

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Mueve el signo menos inicial en $- \frac{1}{\cos^{2} (x)}$ al numerador.

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

Cancela el factor común.

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

Reescribe la expresión.

$\frac{\cos^{2} (x)}{\sin^{2} (x)} - 1 \frac{1}{\sin^{2} (x)}$

Reescribe $- 1 \frac{1}{\sin^{2} (x)}$ como $- \frac{1}{\sin^{2} (x)}$ .

$\frac{\cos^{2} (x)}{\sin^{2} (x)} - \frac{1}{\sin^{2} (x)}$

Combina los numeradores sobre el denominador común.

$\frac{\cos^{2} (x) - 1}{\sin^{2} (x)}$

Reordena $\cos^{2} (x)$ y $- 1$ .

$\frac{- 1 + \cos^{2} (x)}{\sin^{2} (x)}$

Reescribe $- 1$ como $- 1 (1)$ .

$\frac{- 1 (1) + \cos^{2} (x)}{\sin^{2} (x)}$

Factoriza $- 1$ de $\cos^{2} (x)$ .

$\frac{- 1 (1) - 1 (- \cos^{2} (x))}{\sin^{2} (x)}$

Factoriza $- 1$ de $- 1 (1) - 1 (- \cos^{2} (x))$ .

$\frac{- 1 (1 - \cos^{2} (x))}{\sin^{2} (x)}$

Reescribe $- 1 (1 - \cos^{2} (x))$ como $- (1 - \cos^{2} (x))$ .

$\frac{- (1 - \cos^{2} (x))}{\sin^{2} (x)}$

Step 10

Aplica la identidad pitagórica.

$\frac{- \sin^{2} (x)}{\sin^{2} (x)}$

Step 11

Cancela el factor común de $\sin^{2} (x)$ .

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Cancela el factor común.

$\frac{- \sin^{2} (x)}{\sin^{2} (x)}$

Divide $- 1$ por $1$ .

$- 1$