Datrys sin^2pi/8

$$\sin ^ { 2 } \frac { \pi } { 8 }$$

Enrhifo

$$-\frac{\sqrt{2}}{4}+\frac{1}{2}\approx 0.146446609$$

Camau Ateb

Cael gwerth \sin(\frac{\pi }{8}) o’r tabl gwerthoedd trigonometrig.

$$\left(\frac{\sqrt{2-\sqrt{2}}}{2}\right)^{2}$$

I godi \frac{\sqrt{2-\sqrt{2}}}{2} i bŵer, codwch y rhifiadur a'r enwadur i bŵer ac yna rhannwch nhw.

$$\frac{\left(\sqrt{2-\sqrt{2}}\right)^{2}}{2^{2}}$$

Cyfrifo \sqrt{2-\sqrt{2}} i bŵer 2 a chael 2-\sqrt{2}.

$$\frac{2-\sqrt{2}}{2^{2}}$$

Cyfrifo 2 i bŵer 2 a chael 4.

$$\frac{2-\sqrt{2}}{4}$$