This function calculates the arcsine, that is, the angle whose sine is the specified value.
For the argument, specify the sine of the angle you want to return, which must be a value between –1 and 1.
The result angle is in radians between –PI/2 and PI/2. If you want to convert the result to degrees, multiply the result by 180/PI.
Accepts numeric data. Returns numeric data.
ASIN(0.5) gives the result 0.5235987756