[2D] Object at X distance to Y direction from point

I am making a 2D player out of multiple sprites. One of them is hand which isn't attached to the body and is only hovering. I want this hand to be at specific distance away from the torso all the time and rotating towards mouse.

So known info are:

• Start point x1,y1 (player torso position)

• Length a (Distance between player torso and hand)

• Angle alpha (I have already calculated this with mouse position)

I just don't know how to calculate the end point (player hand position). I have tried using the formula:

 x2 = x1 + cos(alpha) * length
 y2 = y1 + sin(alpha) * length

but it doesn't work perfectly. The hand is rotating very fast around the torso even with small cursor movement. Like one round per 6 degrees of angle change.

What am I doing wrong? Picture to demonstrate the situation.

EDIT: Solved - Only had to convert degrees to radians!