Rubuta wani ɗan gajeren sakin layi na labari da aka ba da batun da ke gaba:  Mutum X yana yin lissafin trigonometry
Tabbas, ga ɗan gajeren sakin layi: Oswald yana yin lissafin trigonometry saboda Oswald yana son ya iya lissafin kusurwa da bangarorin triangles. Musamman, Oswald yana so ya iya amfani da sin, cosine, da tangent ayyuka don magance matsaloli.