Remote players head movement detection

[Buffalo]

Is it possible to detect remote players head detection prescisely client side only? Local player is piece of cake tho.

Something i tried but works only partially.

addEventHandler ( "onClientRender", root, function() 
    for i, player in ipairs ( getElementsByType ( "player", root,true ) ) do 
            local x,y,z 
            if getPedTask(player,'primary',5) == 'TASK_SIMPLE_USE_GUN' then 
                x,y,z = getPedTargetEnd(player) 
            else 
                x,y,z = getElementPosition(player) 
                local rot = getPedCameraRotation ( player ) 
                x = x + math.sin ( math.rad ( rot ) ) * 3 
                y = y + math.cos ( math.rad ( rot ) ) * 3 
            end 
            setPedLookAt ( player, x, y, z ) 
    end 
end )