Une démonstration de l'égalité cos(a-b)=cos(a)cos(b)+sin(a)sin(b)

What do you want to download?

You can either download the .ggb file alone or the complete webpage for students with tasks.

I agree to the terms of GeoGebra's non-commercial license

• Offline Activity (.zip)

• GeoGebra Files

  1. Applet 1 (.ggb)