在线 arcsin(x) 计算器。反正弦计算器。
反正弦函数 反正弦函数 是 y = sin(x) 的反函数。
arcsin(y) = sin-1(y) = x + 2kπ
对于每个
k = {...,-2,-1,0,1,2,...}
例如，如果30°的正弦值是0.5:
sin(30°) = 0.5
反正弦函数n the arcsine of 0.5 is 30°:
arcsin(0.5) = sin-1(0.5) = 30°
| y | x = arcsin(y) | |
|---|---|---|
| 度数 | 弧度 | |
| -1 | -90° | -π/2 |
| -0.8660254 | -60° | -π/3 |
| -0.7071068 | -45° | -π/4 |
| -0.5 | -30° | -π/6 |
| 0 | 0° | 0 |
| 0.5 | 30° | π/6 |
| 0.7071068 | 45° | π/4 |
| 0.8660254 | 60° | π/3 |
| 1 | 90° | π/2 |
