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Popular >

2cos(x)*tan(x)-1=0

Solución

2 cos (x) \cdot tan (x) - 1 = 0

Solución

x = \frac{π}{6} + 2 πn, x = \frac{5 π}{6} + 2 πn

+1

Grados

x = 3 0^{\circ} + 36 0^{\circ} n, x = 15 0^{\circ} + 36 0^{\circ} n

Pasos de solución

2 cos (x) tan (x) - 1 = 0

Re-escribir usando identidades trigonométricas

2 cos (x) tan (x) - 1

cos (x) tan (x) = sin (x)

cos (x) tan (x)

Utilizar la identidad trigonométrica básica:

tan (x) = \frac{sin ( x )}{cos ( x )}

= cos (x) \frac{sin ( x )}{cos ( x )}

Simplificar

cos (x) \frac{sin ( x )}{cos ( x )} : sin (x)

cos (x) \frac{sin ( x )}{cos ( x )}

Multiplicar fracciones:

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

= \frac{sin ( x ) cos ( x )}{cos ( x )}

Eliminar los terminos comunes:

cos (x)

= sin (x)

= sin (x)

= - 1 + 2 sin (x)

- 1 + 2 sin (x) = 0

Mover

1

al lado derecho

- 1 + 2 sin (x) = 0

Sumar

1

a ambos lados

- 1 + 2 sin (x) + 1 = 0 + 1

Simplificar

2 sin (x) = 1

2 sin (x) = 1

Dividir ambos lados entre

2

2 sin (x) = 1

Dividir ambos lados entre

2

\frac{2 sin ( x )}{2} = \frac{1}{2}

Simplificar

sin (x) = \frac{1}{2}

sin (x) = \frac{1}{2}

Soluciones generales para

sin (x) = \frac{1}{2}

tabla de valores periódicos con

2 πn

intervalos:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

x = \frac{π}{6} + 2 πn, x = \frac{5 π}{6} + 2 πn

x = \frac{π}{6} + 2 πn, x = \frac{5 π}{6} + 2 πn

Ejemplos populares

2-2cos(θ)=-6cos(θ)

2 - 2 cos (θ) = - 6 cos (θ)

tan(θ)=(-372.688)/(-831.628)

tan (θ) = \frac{- 372.688}{- 831.628}

1 + 2 sin (x) = 1

arctan(0.0625x)+arctan(0.2x)=54

arctan (0.0625 x) + arctan (0.2 x) = 5 4^{\circ}

sec^2(x)+cos(x)=-1

sec^{2} (x) + cos (x) = - 1