How do I calculate the desired angles for a player's shoulder to make the arm point at a position?

[Spraden (Braden)]

Trying to set the proper angles for a shoulder Motor6D.

I don’t want to animate the arm and I am totally lost on the math to get this done.

[dthecoolest]

I would not recommend using the current angle property that the motor6ds inherit from Motors due to this issue with replication and stuff:

Motor6D not listening to CurrentAngle since latest Roblox update

if i re-call correctly, i think it’s something to do with FE

Instead I would recommend doing a CFrame approach to editing the C0 Joint of the motor that has been done before:

How would I make a Motor6D point somewhere?

Solution found in this tweet.

However if you do want to calculate the angle you will need to do some vector maths and trigonometry (one way to do it) like in this diagram I drew in MSPaint for this other issue:

Calculating the angle of servos based on the position of an object

Yeahh Vector mathss Here is the diagram of information you can get when you obtain the vector of the base of the turret to the target position: [DiagramToYourProblem] Once you found this you can use trigonometry to calculate the angle. Hope my MSPaint skills helped. Edit: whoops typo for the bottom length its sqrt(X^2 + Z^2) length of the vector to find that orange length.