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Popular Trigonometria >

(sin(30))(tan(45))+(tan(30))(sin(60))

Solução

(sin (3 0^{\circ})) (tan (4 5^{\circ})) + (tan (3 0^{\circ})) (sin (6 0^{\circ}))

Solução

1

Passos da solução

(sin (3 0^{\circ})) (tan (4 5^{\circ})) + (tan (3 0^{\circ})) (sin (6 0^{\circ}))

= sin (3 0^{\circ}) tan (4 5^{\circ}) + tan (3 0^{\circ}) sin (6 0^{\circ})

Utilizar a seguinte identidade trivial:

sin (3 0^{\circ}) = \frac{1}{2}

sin (3 0^{\circ})

sin (x)

tabela de periodicidade com ciclo de

36 0^{\circ} n

:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{1}{2}

Utilizar a seguinte identidade trivial:

tan (4 5^{\circ}) = 1

tan (4 5^{\circ})

tan (x)

tabela de periodicidade com ciclo de

18 0^{\circ} n

:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} tan (x) 0 \frac{3}{3} 13 \pm \infty - 3 - 1 - \frac{3}{3}

= 1

Utilizar a seguinte identidade trivial:

tan (3 0^{\circ}) = \frac{3}{3}

tan (3 0^{\circ})

tan (x)

tabela de periodicidade com ciclo de

18 0^{\circ} n

:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} tan (x) 0 \frac{3}{3} 13 \pm \infty - 3 - 1 - \frac{3}{3}

= \frac{3}{3}

Utilizar a seguinte identidade trivial:

sin (6 0^{\circ}) = \frac{3}{2}

sin (6 0^{\circ})

sin (x)

tabela de periodicidade com ciclo de

36 0^{\circ} n

:

x 0 3 0^{\circ} 4 5^{\circ} 6 0^{\circ} 9 0^{\circ} 12 0^{\circ} 13 5^{\circ} 15 0^{\circ} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x 18 0^{\circ} 21 0^{\circ} 22 5^{\circ} 24 0^{\circ} 27 0^{\circ} 30 0^{\circ} 31 5^{\circ} 33 0^{\circ} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

= \frac{3}{2}

= \frac{1}{2} \cdot 1 + \frac{3}{3} \cdot \frac{3}{2}

Simplificar

\frac{1}{2} \cdot 1 + \frac{3}{3} \cdot \frac{3}{2} : 1

\frac{1}{2} \cdot 1 + \frac{3}{3} \cdot \frac{3}{2}

\frac{1}{2} \cdot 1 = \frac{1}{2}

\frac{1}{2} \cdot 1

Multiplicar:

\frac{1}{2} \cdot 1 = \frac{1}{2}

= \frac{1}{2}

\frac{3}{3} \cdot \frac{3}{2} = \frac{1}{2}

\frac{3}{3} \cdot \frac{3}{2}

Multiplicar frações:

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

= \frac{3 3}{3 \cdot 2}

33 = 3

33

Aplicar as propriedades dos radicais:

a a = a

33 = 3

= 3

= \frac{3}{3 \cdot 2}

Multiplicar os números:

3 \cdot 2 = 6

= \frac{3}{6}

Eliminar o fator comum:

3

= \frac{1}{2}

= \frac{1}{2} + \frac{1}{2}

Aplicar a regra

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

= \frac{1 + 1}{2}

Somar:

1 + 1 = 2

= \frac{2}{2}

Aplicar a regra

\frac{a}{a} = 1

= 1

= 1

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sin(arccos(-2/3)+2arctan(-1/3))

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