Trigonometría Ejemplos

$\cos (80 + x) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Step 1

Simplifica cada término.

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Reorganiza los términos.

$\cos (x + 80) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Double negation

$\cos (x - (- 80)) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Aplica la diferencia de la razón de los ángulos $\cos (x - y) = \cos (x) \cos (y) + \sin (x) \sin (y)$ .

$(\cos (x) \cos (- 80) + \sin (x) \sin (- 80)) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Simplifica cada término.

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Evalúa $\cos (- 80)$ .

$(\cos (x) \cdot - 0.11038724 + \sin (x) \sin (- 80)) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Mueve $- 0.11038724$ a la izquierda de $\cos (x)$ .

$(- 0.11038724 \cdot \cos (x) + \sin (x) \sin (- 80)) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Evalúa $\sin (- 80)$ .

$(- 0.11038724 \cos (x) + \sin (x) \cdot 0.99388865) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Mueve $0.99388865$ a la izquierda de $\sin (x)$ .

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot \cos (2 + x) + \sin (80 + x) \cdot \sin (20 + x)$

Reorganiza los términos.

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot \cos (x + 2) + \sin (80 + x) \cdot \sin (20 + x)$

Double negation

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot \cos (x - (- 2)) + \sin (80 + x) \cdot \sin (20 + x)$

Aplica la diferencia de la razón de los ángulos $\cos (x - y) = \cos (x) \cos (y) + \sin (x) \sin (y)$ .

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot (\cos (x) \cos (- 2) + \sin (x) \sin (- 2)) + \sin (80 + x) \cdot \sin (20 + x)$

Simplifica cada término.

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Evalúa $\cos (- 2)$ .

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot (\cos (x) \cdot - 0.41614683 + \sin (x) \sin (- 2)) + \sin (80 + x) \cdot \sin (20 + x)$

Mueve $- 0.41614683$ a la izquierda de $\cos (x)$ .

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot (- 0.41614683 \cdot \cos (x) + \sin (x) \sin (- 2)) + \sin (80 + x) \cdot \sin (20 + x)$

Evalúa $\sin (- 2)$ .

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot (- 0.41614683 \cos (x) + \sin (x) \cdot - 0.90929742) + \sin (80 + x) \cdot \sin (20 + x)$

Mueve $- 0.90929742$ a la izquierda de $\sin (x)$ .

$(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) \cdot (- 0.41614683 \cos (x) - 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Expande $(- 0.11038724 \cos (x) + 0.99388865 \sin (x)) (- 0.41614683 \cos (x) - 0.90929742 \sin (x))$ con el método PEIU (primero, exterior, interior, ultimo).

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Aplica la propiedad distributiva.

$- 0.11038724 \cos (x) (- 0.41614683 \cos (x) - 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x) - 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Aplica la propiedad distributiva.

$- 0.11038724 \cos (x) (- 0.41614683 \cos (x)) - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x) - 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Aplica la propiedad distributiva.

$- 0.11038724 \cos (x) (- 0.41614683 \cos (x)) - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Simplifica y combina los términos similares.

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Simplifica cada término.

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Multiplica $- 0.11038724 \cos (x) (- 0.41614683 \cos (x))$ .

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Multiplica $- 0.41614683$ por $- 0.11038724$ .

$0.0459373 \cos (x) \cos (x) - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

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

$0.0459373 (\cos^{1} (x) \cos (x)) - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

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

$0.0459373 (\cos^{1} (x) \cos^{1} (x)) - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

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

$0.0459373 {\cos (x)}^{1 + 1} - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Suma $1$ y $1$ .

$0.0459373 \cos^{2} (x) - 0.11038724 \cos (x) (- 0.90929742 \sin (x)) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Multiplica $- 0.90929742$ por $- 0.11038724$ .

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) + 0.99388865 \sin (x) (- 0.41614683 \cos (x)) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Multiplica $- 0.41614683$ por $0.99388865$ .

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \sin (x) \cos (x) + 0.99388865 \sin (x) (- 0.90929742 \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

Multiplica $0.99388865 \sin (x) (- 0.90929742 \sin (x))$ .

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Multiplica $- 0.90929742$ por $0.99388865$ .

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \sin (x) \cos (x) - 0.90374039 \sin (x) \sin (x) + \sin (80 + x) \cdot \sin (20 + x)$

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

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \sin (x) \cos (x) - 0.90374039 (\sin^{1} (x) \sin (x)) + \sin (80 + x) \cdot \sin (20 + x)$

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

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \sin (x) \cos (x) - 0.90374039 (\sin^{1} (x) \sin^{1} (x)) + \sin (80 + x) \cdot \sin (20 + x)$

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

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \sin (x) \cos (x) - 0.90374039 {\sin (x)}^{1 + 1} + \sin (80 + x) \cdot \sin (20 + x)$

Suma $1$ y $1$ .

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \sin (x) \cos (x) - 0.90374039 \sin^{2} (x) + \sin (80 + x) \cdot \sin (20 + x)$

Reordena los factores de $- 0.41360361 \sin (x) \cos (x)$ .

$0.0459373 \cos^{2} (x) + 0.10037483 \cos (x) \sin (x) - 0.41360361 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + \sin (80 + x) \cdot \sin (20 + x)$

Resta $0.41360361 \cos (x) \sin (x)$ de $0.10037483 \cos (x) \sin (x)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + \sin (80 + x) \cdot \sin (20 + x)$

Reorganiza los términos.

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + \sin (x + 80) \cdot \sin (20 + x)$

Double negation

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + \sin (x - (- 80)) \cdot \sin (20 + x)$

Aplica la diferencia de la razón de los ángulos.

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (\sin (x) \cos (- 80) - \cos (x) \sin (- 80)) \cdot \sin (20 + x)$

Simplifica cada término.

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Evalúa $\cos (- 80)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (\sin (x) \cdot - 0.11038724 - \cos (x) \sin (- 80)) \cdot \sin (20 + x)$

Mueve $- 0.11038724$ a la izquierda de $\sin (x)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \cdot \sin (x) - \cos (x) \sin (- 80)) \cdot \sin (20 + x)$

Evalúa $\sin (- 80)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - \cos (x) \cdot 0.99388865) \cdot \sin (20 + x)$

Multiplica $0.99388865$ por $- 1$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot \sin (20 + x)$

Reorganiza los términos.

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot \sin (x + 20)$

Double negation

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot \sin (x - (- 20))$

Aplica la diferencia de la razón de los ángulos.

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot (\sin (x) \cos (- 20) - \cos (x) \sin (- 20))$

Simplifica cada término.

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Evalúa $\cos (- 20)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot (\sin (x) \cdot 0.40808206 - \cos (x) \sin (- 20))$

Mueve $0.40808206$ a la izquierda de $\sin (x)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot (0.40808206 \cdot \sin (x) - \cos (x) \sin (- 20))$

Evalúa $\sin (- 20)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot (0.40808206 \sin (x) - \cos (x) \cdot - 0.91294525)$

Multiplica $- 0.91294525$ por $- 1$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) + (- 0.11038724 \sin (x) - 0.99388865 \cos (x)) \cdot (0.40808206 \sin (x) + 0.91294525 \cos (x))$

Expande $(- 0.11038724 \sin (x) - 0.99388865 \cos (x)) (0.40808206 \sin (x) + 0.91294525 \cos (x))$ con el método PEIU (primero, exterior, interior, ultimo).

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Aplica la propiedad distributiva.

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.11038724 \sin (x) (0.40808206 \sin (x) + 0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x) + 0.91294525 \cos (x))$

Aplica la propiedad distributiva.

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.11038724 \sin (x) (0.40808206 \sin (x)) - 0.11038724 \sin (x) (0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x) + 0.91294525 \cos (x))$

Aplica la propiedad distributiva.

Simplifica y combina los términos similares.

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Simplifica cada término.

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Multiplica $- 0.11038724 \sin (x) (0.40808206 \sin (x))$ .

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Multiplica $0.40808206$ por $- 0.11038724$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin (x) \sin (x) - 0.11038724 \sin (x) (0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x)) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

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

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 (\sin^{1} (x) \sin (x)) - 0.11038724 \sin (x) (0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x)) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

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

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 (\sin^{1} (x) \sin^{1} (x)) - 0.11038724 \sin (x) (0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x)) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

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

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 {\sin (x)}^{1 + 1} - 0.11038724 \sin (x) (0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x)) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

Suma $1$ y $1$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.11038724 \sin (x) (0.91294525 \cos (x)) - 0.99388865 \cos (x) (0.40808206 \sin (x)) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

Multiplica $0.91294525$ por $- 0.11038724$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.10077751 \sin (x) \cos (x) - 0.99388865 \cos (x) (0.40808206 \sin (x)) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

Multiplica $0.40808206$ por $- 0.99388865$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.10077751 \sin (x) \cos (x) - 0.40558813 \cos (x) \sin (x) - 0.99388865 \cos (x) (0.91294525 \cos (x))$

Multiplica $- 0.99388865 \cos (x) (0.91294525 \cos (x))$ .

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Multiplica $0.91294525$ por $- 0.99388865$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.10077751 \sin (x) \cos (x) - 0.40558813 \cos (x) \sin (x) - 0.90736592 \cos (x) \cos (x)$

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

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

Suma $1$ y $1$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.10077751 \sin (x) \cos (x) - 0.40558813 \cos (x) \sin (x) - 0.90736592 \cos^{2} (x)$

Reordena los factores de $- 0.10077751 \sin (x) \cos (x)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.10077751 \cos (x) \sin (x) - 0.40558813 \cos (x) \sin (x) - 0.90736592 \cos^{2} (x)$

Resta $0.40558813 \cos (x) \sin (x)$ de $- 0.10077751 \cos (x) \sin (x)$ .

$0.0459373 \cos^{2} (x) - 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.50636564 \cos (x) \sin (x) - 0.90736592 \cos^{2} (x)$

Step 2

Simplifica mediante la adición de términos.

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Resta $0.90736592 \cos^{2} (x)$ de $0.0459373 \cos^{2} (x)$ .

$- 0.31322878 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.50636564 \cos (x) \sin (x) - 0.86142862 \cos^{2} (x)$

Resta $0.50636564 \cos (x) \sin (x)$ de $- 0.31322878 \cos (x) \sin (x)$ .

$- 0.81959442 \cos (x) \sin (x) - 0.90374039 \sin^{2} (x) - 0.04504705 \sin^{2} (x) - 0.86142862 \cos^{2} (x)$

Resta $0.04504705 \sin^{2} (x)$ de $- 0.90374039 \sin^{2} (x)$ .

$- 0.81959442 \cos (x) \sin (x) - 0.94878744 \sin^{2} (x) - 0.86142862 \cos^{2} (x)$