Originally Posted by bubbers44
slowing down the climb speed increased Vx to 90 degrees.
Talk about confusing the poor guy. Vx is not an angle, it's a speed.
Wiki:
Climbing at Vx allows pilots to maximize the altitude gain per unit ground distance. That is, Vx allows pilots to maximize their climb while sacrificing the least amount of ground distance. This occurs at the speed for which the difference between thrust and drag is the greatest (maximum excess thrust).
So Vx remains constant regardless of wind. It is purely aerodynamic in nature, being the speed where excess thrust/power is greatest, and is not affected by the wind. The actual angle achieved will vary: more headwind, the steeper the climb. This is because while the rate of climb eg 500ft/min is constant, the groundspeed has reduced (because of the wind. Over say 1nm, the aircraft will spend longer to get there, therefore allowing more climbing time. Higher after 1nm means a steeper angle/gradient achieved. The pilot would still only see the "normal" rate of climb on the VSI though.