Sarudzo yokuti darisanwa idivi ripi uye hwaro divi ripi inodudzirwa nokuti timire mugonyo ripi. Muzendami ndiye murefu anoramba aine zita rimwechete - uyu haachinje. Divi rakabatana negonyo ratiri kushanda naro ndiro rinova hwaro, repiri rakaita mutwi nehwaro ndiro rinova darisanwa. Zvizhinji zvichatsanangurwa muchikamu chePimagonyonhatu, (trigonometry) chichatevera mberi.