Addition formula for cosine

Change the angles to see the cases in all four quadrants.

 

Malin Christersson

 
Type de ressources
Activité
Balises
addition  cosine  exploration  identities  trigonometry  unit-circle 
Tranche d'âges
15 – 18
Langue
English (United Kingdom)
 
 
 
© 2026 International GeoGebra Institute