can anyone start me off on this? its trigonometric ratios

Answer:
The angle is about 30.27 degrees.
Step-by-step explanation:
Use the trig ratio cosine because you are given the adjacent leg and the hypotenuse.
[tex]cos^{-1} =19/22[/tex]
Plug into a calculator
Rounded to the nearest hundredth the angle is 30.27 degrees.