Nyora ndima pfupi yenyaya iri pamusoro penyaya inotevera:  Munhu X ari kuita trigonometry
Chokwadi, heino ndima pfupi: Oswald ari kuita trigonometry nokuti Oswald anoda kukwanisa kuverenga makona namativi etriangeri. Zvikurukuru, Oswald anoda kukwanisa kushandisa sine, cosine, uye tangent mabasa kupedza zvinetso.