Zadanie nr 13 z Matury podstawowej 2019

$\cos \alpha = \small \displaystyle\frac{5}{4}$

$\cos \alpha = \small \displaystyle\frac{1}{5}$

$\cos \alpha = \small \displaystyle\frac{9}{25}$

$\cos \alpha = \small \displaystyle\frac{3}{5}$