Which expression can be used to find m pls help

Answer:
∠ U = 22.62°
Step-by-step explanation:
We can use the trigonometric expression to find ∠U by using the ratio:
sin(θ) = opposite/ hypotenuse
=> sin ∠U = 7.5/ 19.5
=> ∠ U = [tex]sin^{-1}[/tex]( 7.5/ 19.5)
∴ ∠ U = 22.619° ≈ 22.62°