9000038606
Část:
B
Zapište komplexní číslo \(\cos \frac{\pi }{4} + \mathrm{i}\sin \frac{\pi }{4}\)
v algebraickém tvaru.
\(\frac{\sqrt{2}}
{2} + \mathrm{i}\frac{\sqrt{2}}
{2} \)
\(\frac{\sqrt{2}}
{2} -\mathrm{i}\frac{\sqrt{2}}
{2} \)
\(\frac{\sqrt{3}}
{2} + \mathrm{i}\frac{\sqrt{3}}
{2} \)
\(\frac{\sqrt{3}}
{2} -\mathrm{i}\frac{\sqrt{3}}
{2} \)