trigonometriijai is the singular illative of trigonometriija.

trigonometriijaN

Lule Sámi

trigonometrijjaN

North Sámi – Lule Sámidict-sme-smj/src/all_smesmj.xml:50942Edit on GitHub Suggest

Case	Sg	Pl
Nom	trigonometriija	trigonometriijat
Acc	trigonometriija	trigonometriijaid
Gen	trigonometriija	trigonometriijaid
Ill	trigonometriijai / trigonometriijii	trigonometriijaide
Loc	trigonometriijas	trigonometriijain
Ess	trigonometriijan
Com	trigonometriijain	trigonometriijaiguin