Carrie found a stone in the shape of a 30°–60°–90° triangle. The hypotenuse has a length of 5 cm. What is the length of the shorter leg?

$b = 5 \times \sin \left(30\right) = 5 \times 0 , 5 = 2.5 c m$
$c = 5 \times \cos \left(30\right) = 5 \times \frac{\sqrt{3}}{2} = 5 \times 0.866 = 4 , 33$