Math.asin in function-node

Hallo together,
I want to build a function node to calculate from MPU6050-Gyro to angle

with function:

var korr = -(((Math.asin(msg.payload)/9.81)*180/Math.Pi)-2.8);
msg.payload = korr;
return msg;

... but I do´n´t get a correct result ...

Where´s my mistakt ?
Thank you all :slight_smile: )

Edit - I didn't spot the value under the debug node.

That is saying Give me the angle whose sin is -5.61. Since the sin of an angle is always between -1 and +1 that is impossible.