Function asin() calculates the radian of a sine value.

Arguments：

• Sine <number>, ∈ [-1, 1]

Returns：

• Radian <number>, ∈ [-PI/2, PI/2]

Common Usage

Example: Calculate the radian of sine value 0.5

return asin(0.5) * 180 / pi()

30

Example: Calculate the radian of each row (sine value) of an alias

uncollect [1, -0.5, 0] as a
return asin(a)

1.5707963267949
-0.523598775598299
0