Rekitangula → pola
Tiyeni tisinthe kadontho ka x ikufanana ndi 6, y ikufanana ndi 4. Chithunzi chikuonetsa: 6 mopingasa ndi 4 mokwera, ndipo zizindikiro za funso ndi zimene tikufuna, r ndi theta. Dinani 
, lembani 6, dinani 
ndi 
, kenako lembani 4. Dinani ndi 
, cholembedwa cha lalanje pamwamba pa batani la 8: r ndi 7.211102551. Dinani ndi 
kuti muone theta: madigiri 33.69006753. Dinani ndi kachiwiri kuti mubwerere ku r: 7.211102551.