dany-jest-trojkat-prostokatny-patrz-rysunek-wtedy-tgalpha-jest-rowny

$\sqrt{2}$\sqrt{2}

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

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

$\displaystyle \frac{1}{\sqrt{2}}$\displaystyle \frac{1}{\sqrt{2}}