Someone help me with this ASAP I’ll mark u as brilliant

Answer:5.7
Step-by-step explanation:
adjacent=5.5
Hypotenuse=x
theta=50°
cos(theta)=adjacent ➗ hypotenuse
Cos50=5.5 ➗ x
0.9650=5.5 ➗ x
Cross multiplying we get
0.9650 x x=5.5
Divide both sides by 0.9650
(0.9650 x x)/0.9650=5.5/0.9650
x=5.7