
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
From two points $A$ and $B$, which are $d$ km apart, an observation is made simultaneously for one second of an airplane flying in a straight line at constant speed. From point $A$, it is observed that the airplane has shifted by an angle of $\alpha$, and from point $B$ it is observed that the airplane has shifted by an angle of $\beta$ (the angles $\alpha$ and $\beta$ are acute). What is the minimum speed the airplane could have?

Present the answer in LaTex format: \boxed{Your answer}
user