Sauya 90°

Juyin kwata ɗaya na da'irar shi ne $\displaystyle 90^{\circ}$, $\displaystyle \frac{\pi}{2}$ radian, ko $\displaystyle 100\text{ grad}$. 2nd F da maɓallin ɗigo shi ne D R G: yana sauya lambar da ke kan allo zuwa ma'aunin kusurwa na gaba. Danna , rubuta 90, sannan da . $\displaystyle 90^{\circ}$ $\displaystyle \dfrac{1}{2}\pi$ radian ne. Sake , : 100. grad. Kuma sake , : komawa zuwa 90. digiri.