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受欢迎的三角函数 >

-1+sin(x)=-1.3

解答

- 1 + sin (x) = - 1.3

解答

x = - 0.30469 \dots + 2 πn, x = π + 0.30469 \dots + 2 πn

+1

度数

x = - 17.45760 \dots^{\circ} + 36 0^{\circ} n, x = 197.45760 \dots^{\circ} + 36 0^{\circ} n

求解步骤

- 1 + sin (x) = - 1.3

将

1

到右边

- 1 + sin (x) = - 1.3

两边加上

1

- 1 + sin (x) + 1 = - 1.3 + 1

化简

sin (x) = - 0.3

sin (x) = - 0.3

使用反三角函数性质

sin (x) = - 0.3

sin (x) = - 0.3

的通解

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

x = arcsin (- 0.3) + 2 πn, x = π + arcsin (0.3) + 2 πn

x = arcsin (- 0.3) + 2 πn, x = π + arcsin (0.3) + 2 πn

以小数形式表示解

x = - 0.30469 \dots + 2 πn, x = π + 0.30469 \dots + 2 πn

作图

流行的例子

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cos(2x)+5*cos(x)=-3