w-trojkacie-prostokatnym-o-dlugosciach-przyprostokatnych-4-i-9-cosinus

$\displaystyle \frac{9}{\sqrt{97}}$\displaystyle \frac{9}{\sqrt{97}}

$\displaystyle \frac{4}{\sqrt{97}}$\displaystyle \frac{4}{\sqrt{97}}

$\displaystyle \frac{4}{9}$\displaystyle \frac{4}{9}

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