Using the sum of the angle measures of a triangle,
m

Answer:
a = 2.18 units
Step-by-step explanation:
[tex] \sin \: 33 \degree = \frac{a}{4} \\ 0.544639035 = \frac{a}{4} \\ a = 4 \times 0.544639035 \\ a = 2.17855614 \\ a = 2.18 \: units[/tex]