BOAC,
I think I finally got it,
I cannot thank you enough for that great explanation on TAS in relation to a constant airspeed.
Finally I do understand WHY TAS is decreasing with a constant Mach climb.
So to answer the question at 30’000 ft; Mach1: TAS will be lower than at sea level (Due to the temperature).
Let me try again with the TAS climb;
IAS will decrease in a constant TAS climb
So if I got this right AoA would have to increase since my IAS will decrease at a constant Mach climb(in order to produce same amount of lift) .
I did have 2 posts at 2009 about where would be a good place to start my aviation training. And I did remove them