kat-alpha-jest-ostry-i-spelniona-jest-rownosc-displaystyle-sinalphafrac4sqrt29

$\displaystyle \frac{5}{9}$\displaystyle \frac{5}{9}

$\displaystyle \frac{7}{9}$\displaystyle \frac{7}{9}

$\displaystyle \frac{49}{81}$\displaystyle \frac{49}{81}

$\displaystyle \frac{\sqrt{2}}{3}$\displaystyle \frac{\sqrt{2}}{3}