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受欢迎的三角函数 >

sin(a)=0.4

解答

sin (a) = 0.4

解答

a = 0.41151 \dots + 2 πn, a = π - 0.41151 \dots + 2 πn

+1

度数

a = 23.57817 \dots^{\circ} + 36 0^{\circ} n, a = 156.42182 \dots^{\circ} + 36 0^{\circ} n

求解步骤

sin (a) = 0.4

使用反三角函数性质

sin (a) = 0.4

sin (a) = 0.4

的通解

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

a = arcsin (0.4) + 2 πn, a = π - arcsin (0.4) + 2 πn

a = arcsin (0.4) + 2 πn, a = π - arcsin (0.4) + 2 πn

以小数形式表示解

a = 0.41151 \dots + 2 πn, a = π - 0.41151 \dots + 2 πn

作图

流行的例子

sin(2x)=1.47(sin(x))^2