Isayini nesayini ephambene, ngamadigri

Kuthrigonometri, qala ngokuhlola iyunithi ye-engeli: u-D omncane esikrinini usho amadigri. Cindezela , uthayiphe 30, , . Isibalo $\displaystyle \sin 30^{\circ}$ $\displaystyle \dfrac{1}{2}$, okhonjiswa njengengxenyenamba. Cindezela ukuze uthole idesimali: 0.5. I-sine ephambene ingumbhalo ophuzi ophezu kwenkinobho ye-sine. Cindezela , uthayiphe 0.5, , : amadigri 30.

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