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Popular >

sin^2(x)-2/3 =0

Solución

sin^{2} (x) - \frac{2}{3} = 0

Solución

x = 0.95531 \dots + 2 πn, x = π - 0.95531 \dots + 2 πn, x = - 0.95531 \dots + 2 πn, x = π + 0.95531 \dots + 2 πn

+1

Grados

x = 54.73561 \dots^{\circ} + 36 0^{\circ} n, x = 125.26438 \dots^{\circ} + 36 0^{\circ} n, x = - 54.73561 \dots^{\circ} + 36 0^{\circ} n, x = 234.73561 \dots^{\circ} + 36 0^{\circ} n

Pasos de solución

sin^{2} (x) - \frac{2}{3} = 0

Usando el método de sustitución

sin^{2} (x) - \frac{2}{3} = 0

Sea:

sin (x) = u

u^{2} - \frac{2}{3} = 0

u^{2} - \frac{2}{3} = 0 : u = \frac{2}{3}, u = - \frac{2}{3}

u^{2} - \frac{2}{3} = 0

Mover

\frac{2}{3}

al lado derecho

u^{2} - \frac{2}{3} = 0

Sumar

\frac{2}{3}

a ambos lados

u^{2} - \frac{2}{3} + \frac{2}{3} = 0 + \frac{2}{3}

Simplificar

u^{2} = \frac{2}{3}

u^{2} = \frac{2}{3}

Para

x^{2} = f (a)

las soluciones son

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

u = \frac{2}{3}, u = - \frac{2}{3}

Sustituir en la ecuación

u = sin (x)

sin (x) = \frac{2}{3}, sin (x) = - \frac{2}{3}

sin (x) = \frac{2}{3}, sin (x) = - \frac{2}{3}

sin (x) = \frac{2}{3} : x = arcsin (\frac{2}{3}) + 2 πn, x = π - arcsin (\frac{2}{3}) + 2 πn

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

Aplicar propiedades trigonométricas inversas

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

Soluciones generales para

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

sin (x) = a \Rightarrow x = arcsin (a) + 2 πn, x = π - arcsin (a) + 2 πn

x = arcsin (\frac{2}{3}) + 2 πn, x = π - arcsin (\frac{2}{3}) + 2 πn

x = arcsin (\frac{2}{3}) + 2 πn, x = π - arcsin (\frac{2}{3}) + 2 πn

sin (x) = - \frac{2}{3} : x = arcsin (- \frac{2}{3}) + 2 πn, x = π + arcsin (\frac{2}{3}) + 2 πn

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

Aplicar propiedades trigonométricas inversas

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

Soluciones generales para

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

sin (x) = - a \Rightarrow x = arcsin (- a) + 2 πn, x = π + arcsin (a) + 2 πn

x = arcsin (- \frac{2}{3}) + 2 πn, x = π + arcsin (\frac{2}{3}) + 2 πn

x = arcsin (- \frac{2}{3}) + 2 πn, x = π + arcsin (\frac{2}{3}) + 2 πn

Combinar toda las soluciones

x = arcsin (\frac{2}{3}) + 2 πn, x = π - arcsin (\frac{2}{3}) + 2 πn, x = arcsin (- \frac{2}{3}) + 2 πn, x = π + arcsin (\frac{2}{3}) + 2 πn

Mostrar soluciones en forma decimal

x = 0.95531 \dots + 2 πn, x = π - 0.95531 \dots + 2 πn, x = - 0.95531 \dots + 2 πn, x = π + 0.95531 \dots + 2 πn

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