zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的三角函数 >

19= 1/27.96.2sin(x)

解答

19 = \frac{1}{2} \cdot 7.9 \cdot 6.2 sin (x)

解答

x = 0.88802 \dots + 2 πn, x = π - 0.88802 \dots + 2 πn

+1

度数

x = 50.88005 \dots^{\circ} + 36 0^{\circ} n, x = 129.11994 \dots^{\circ} + 36 0^{\circ} n

求解步骤

19 = \frac{1}{2} \cdot 7.9 \cdot 6.2 sin (x)

交换两边

\frac{1}{2} \cdot 7.9 \cdot 6.2 sin (x) = 19

化简

\frac{1}{2} \cdot 7.9 \cdot 6.2 : \frac{48.98}{2}

\frac{1}{2} \cdot 7.9 \cdot 6.2

数字相乘:

7.9 \cdot 6.2 = 48.98

= 48.98 \cdot \frac{1}{2}

分式相乘:

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

= \frac{1 \cdot 48.98}{2}

数字相乘:

1 \cdot 48.98 = 48.98

= \frac{48.98}{2}

\frac{48.98}{2} sin (x) = 19

在两边乘以

2

\frac{48.98}{2} sin (x) = 19

在两边乘以

2

2 \cdot \frac{48.98}{2} sin (x) = 19 \cdot 2

化简

48.98 sin (x) = 38

48.98 sin (x) = 38

两边除以

48.98

48.98 sin (x) = 38

两边除以

48.98

\frac{48.98 sin ( x )}{48.98} = \frac{38}{48.98}

化简

sin (x) = 0.77582 \dots

sin (x) = 0.77582 \dots

使用反三角函数性质

sin (x) = 0.77582 \dots

sin (x) = 0.77582 \dots

的通解

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

x = arcsin (0.77582 \dots) + 2 πn, x = π - arcsin (0.77582 \dots) + 2 πn

x = arcsin (0.77582 \dots) + 2 πn, x = π - arcsin (0.77582 \dots) + 2 πn

以小数形式表示解

x = 0.88802 \dots + 2 πn, x = π - 0.88802 \dots + 2 πn

作图

流行的例子

2tan(60-x)=tan(x)

2 tan (60 - x) = tan (x)

cos (x) = - 0.71

tan (α) = \frac{8}{10}

sin(2x)+sqrt(2)*cos(x)=0

sin (2 x) + 2 \cdot cos (x) = 0

(6.7)/(sin(33))=(5.4)/(sin(A))

\frac{6.7}{sin ( 3 3 ^{\circ} )} = \frac{5.4}{sin ( A )}