Is there a tool for calculating roof slopes?

Hello,

our house planning continues ^^.
My question is basically already in the headline. Is there a tool or small program that can show how the roof slope affects the living space? So to speak, in cross-section.

The following data are available.

Roof pitch: 45 °
Room width: 10 meters
Knee wall height: 85 cm

How far can I now (1.85 m) go outward without hitting my head on the ceiling ^^.

This should actually also work with a scaled drawing, but of course I don’t have a protractor for the angle calculation.

Best regards

Hello,

you can surely buy software at a computer store that allows you to plan house construction, often it is also designed so that you can see the whole thing as a 3D model.

Barbar