How to set ped rotation by the camera matrix?

[12p]

Suppose we have set the camera matrix. And the player is facing to another point, not the same as the camera. Something like this:

Well, how to set the right ped rotation, so he will be pointing at the camera facing point? (setPedAimTarget or setPedLookAt doesn't help me)

[Aibo]

calculate rotation from 2 getCameraMatrix() XY points, and setPedRotation() with that angle?

[12p]

I will test. Thanks for fast answer

EDIT (sorry and excuse me, I have to xpress my real thinking): F^CK YEAH MATE! That's the thing I wanted to do, thanks a f^cking lot!