Hello everyone, I hope you're all doing great,
I have a problem I am hoping some expert among this nice community might help me resolve.

I need to understand how photography works in order to plan automatic flights.

The image below explains my current situation, how far away (D2) and how high (H2) my drone needs to be in order to take the whole building in one shot.

Please feel free to inform me with any mathematical formula that may help me in other situations.
As you may have guessed from the picture I need the numbers for H2 and D2.

Drone used is mavic pro and gimbal pitch angle is set to -45°.

Situation

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